12 NCERT CBSE Micro Economics Market Equilibrium

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Theme Analysis

Main ThemeMarket Equilibrium and Price Determination

Subject CategoryEconomics

Key Concepts

Market EquilibriumEquilibrium PriceEquilibrium QuantityExcess DemandExcess SupplyDemand ShiftsSupply ShiftsLabour Market EquilibriumFree Entry and Exit of FirmsPrice CeilingPrice FloorInvisible Hand

Question FocusQuestions cover core definitions, the process of market adjustment, the impact of various shifts in demand and supply under different market structures (fixed vs. free entry/exit), and the effects of government interventions like price ceilings and floors. Difficulty is mixed, with an emphasis on understanding and applying concepts rather than rote memorization. Scenarios are used to test analytical skills.

Q1

MCQ Remember Market Equilibrium Definition

Which of the following best defines market equilibrium?

A A situation where market supply is greater than market demand.

B A situation where the plans of all consumers and firms in the market match, and the market clears.

C A situation where market demand is greater than market supply.

D A situation where firms are earning supernormal profits.

Hint: Think about what it means for supply and demand to be in balance.

Answer

Market equilibrium is defined as a situation where the plans of all consumers and firms in the market match, and the market clears. This means that the aggregate quantity firms wish to sell equals the quantity consumers wish to buy.

Explanation

Q2

MCQ Understand Excess Demand

What condition in a market indicates the presence of 'excess demand'?

A Market supply is greater than market demand at a given price.

B Market demand exceeds market supply at a given price.

C The equilibrium price is higher than the prevailing market price.

D Firms are unable to sell all the quantity they wish to supply.

Hint: Consider which side of the market (buyers or sellers) has unfulfilled desires.

Answer

Excess demand exists in the market at a price when market demand exceeds market supply at that price.

Explanation

Q3

MCQ Understand Excess Supply

When does 'excess supply' occur in a market?

A Market demand exceeds market supply at a given price.

B Market supply is less than market demand at a given price.

C Market supply is greater than market demand at a given price.

D Consumers are willing to pay more than the prevailing price.

Hint: Think about which side of the market (buyers or sellers) has more than they want to transact.

Answer

Excess supply occurs when, at a given price, market supply is greater than market demand. This means firms wish to sell more than consumers wish to buy.

Explanation

Q4

MCQ Remember Equilibrium Price and Quantity

In a perfectly competitive market, the price at which equilibrium is reached is called the ______, and the quantity bought and sold at this price is called the ______.

A market price; market quantity

B clearing price; clearing quantity

C equilibrium price; equilibrium quantity

D fair price; fair quantity

Hint: These are specific terms used to describe the state of balance in a market.

Answer

The price at which equilibrium is reached is called equilibrium price and the quantity bought and sold at this price is called equilibrium quantity.

Explanation

Q5

MCQ Remember Equilibrium Condition

The fundamental condition for market equilibrium, where `p*` denotes the equilibrium price, is:

A qD(p*) > qS(p*)

B qS(p*) > qD(p*)

C qD(p*) = qS(p*)

D qD(p*) + qS(p*) = 0

Hint: Equilibrium means demand and supply are balanced.

Answer

At equilibrium, the aggregate quantity that all firms wish to sell equals the quantity that all the consumers in the market wish to buy, hence qD(p*) = qS(p*).

Explanation

Q6

MCQ Understand Market Adjustment (Excess Demand)

If the prevailing market price for a commodity is below the equilibrium price, what is the likely outcome and adjustment process?

A Excess supply will occur, leading firms to lower prices.

B Excess demand will occur, leading consumers to bid up prices.

C The market will remain stable as demand equals supply.

D Firms will increase supply, and prices will fall.

Hint: Consider the behavior of buyers and sellers when there's a shortage.

Answer

If the prevailing price is below equilibrium, there will be excess demand (quantity demanded > quantity supplied). Some consumers unable to obtain the commodity will be willing to pay more, causing the market price to tend to increase towards equilibrium.

Explanation

Q7

MCQ Understand Market Adjustment (Excess Supply)

What happens in a perfectly competitive market if the prevailing price is above the equilibrium price?

A There will be excess demand, and prices will rise.

B There will be excess supply, and firms will lower prices to sell their desired quantity.

C The market will remain in equilibrium, with no price change.

D Consumers will demand more, causing prices to rise further.

Hint: Think about the behavior of producers when they have unsold inventory.

Answer

If the prevailing price is above the equilibrium price, market supply will exceed market demand, leading to excess supply. Firms will be unable to sell all they wish to, so they will lower their price to clear the surplus, moving towards equilibrium.

Explanation

Q8

MCQ Remember Invisible Hand

The concept of an 'Invisible Hand' in a perfectly competitive market, as maintained from the time of Adam Smith, suggests that it:

A Directs government intervention to set prices.

B Changes price whenever there is an imbalance in the market, guiding it towards equilibrium.

C Ensures firms always earn supernormal profits.

D Prevents any price changes in the market.

Hint: This concept explains the natural tendency of markets to self-correct.

Answer

The 'Invisible Hand' is maintained to be at play in a perfectly competitive market, changing price whenever there is imbalance (excess demand or excess supply) and guiding the market towards equilibrium.

Explanation

Q9

MCQ Understand Fixed Number of Firms Equilibrium

In a perfectly competitive market with a fixed number of firms, how is equilibrium graphically represented?

A Where the market supply curve is vertical.

B Where the market demand curve is horizontal.

C At the intersection of the market supply curve and the market demand curve.

D Where the price is equal to the minimum average cost.

Hint: Recall the basic graphical model for supply and demand.

Answer

Graphically, an equilibrium is a point where the market supply curve intersects the market demand curve because this is where market demand equals market supply.

Explanation

Q10

MCQ Apply Equilibrium Calculation (Fixed Firms)

Suppose the market demand curve for wheat is `qD = 200 - p` and the market supply curve is `qS = 120 + p`. What is the equilibrium price?

A Rs 80

B Rs 40

C Rs 160

D Rs 20

Hint: Set quantity demanded equal to quantity supplied and solve for price.

Answer

At equilibrium, qD = qS. So, 200 - p = 120 + p. Rearranging terms, 80 = 2p, which means p = 40. The equilibrium price is Rs 40.

Explanation

Q11

MCQ Apply Equilibrium Calculation (Fixed Firms)

Using the demand `qD = 200 - p` and supply `qS = 120 + p` curves, and an equilibrium price of Rs 40, what is the equilibrium quantity?

A 120 kg

B 145 kg

C 160 kg

D 175 kg

Hint: Once you have the equilibrium price, plug it into either the demand or supply equation.

Answer

Substitute the equilibrium price (p=40) into either the demand or supply equation. Using demand: qD = 200 - 40 = 160 kg. Using supply: qS = 120 + 40 = 160 kg. The equilibrium quantity is 160 kg.

Explanation

Q12

MCQ Analyze Excess Demand Calculation

Given `qD = 200 - p` and `qS = 120 + p`, if the prevailing price is Rs 25, what is the excess demand?

A 30 kg

B 175 kg

C 145 kg

D 80 kg

Hint: Calculate quantity demanded and quantity supplied at the given price, then find the difference.

Answer

At p = 25: qD = 200 - 25 = 175. qS = 120 + 25 = 145. Excess demand = qD - qS = 175 - 145 = 30 kg.

Explanation

Q13

MCQ Analyze Excess Supply Calculation

Given `qD = 200 - p` and `qS = 120 + p`, if the prevailing price is Rs 45, what is the excess supply?

A 10 kg

B 155 kg

C 165 kg

D 20 kg

Hint: Calculate quantity demanded and quantity supplied at the given price, then find the difference.

Answer

At p = 45: qD = 200 - 45 = 155. qS = 120 + 45 = 165. Excess supply = qS - qD = 165 - 155 = 10 kg.

Explanation

Q14

MCQ Remember Labour Market Demand

In a perfectly competitive labour market, the demand for labour by a single firm is determined by the condition where the wage rate (w) equals the:

A Average Product of Labour (APL)

B Total Revenue Product of Labour (TRPL)

C Marginal Revenue Product of Labour (MRPL)

D Marginal Cost of Labour (MCL)

Hint: Think about the additional revenue generated by hiring one more unit of labor.

Answer

The firm, being a profit maximiser, will employ labour up to the point where the extra cost (wage rate, w) equals the additional benefit (Marginal Revenue Product of Labour, MRPL). So, w = MRPL.

Explanation

Q15

MCQ Understand Labour Market Demand (Competitive Firm)

For a perfectly competitive firm, the Marginal Revenue Product of Labour (MRPL) is equal to the Value of Marginal Product of Labour (VMPL) because:

A Marginal product of labour is constant.

B The firm can influence the price of the commodity.

C Marginal revenue is equal to the price of the commodity.

D The firm is a wage-taker.

Hint: Consider the relationship between marginal revenue and price for a perfectly competitive firm.

Answer

MRPL = MR × MPL. For a perfectly competitive firm, marginal revenue (MR) equals the price (P) of the commodity. Therefore, MRPL = P × MPL, which is the definition of VMPL.

Explanation

Q16

MCQ Analyze Labour Demand Curve Slope

Why is the demand curve for labour downward sloping, assuming the law of diminishing marginal product holds?

A As wages fall, the opportunity cost of leisure increases, so less labour is supplied.

B To maintain w = VMPL, if wages rise, VMPL must also rise, which requires less labour due to diminishing MP L.

C Firms always seek to minimize the number of labourers employed, regardless of wage.

D The supply of labour is upward sloping, forcing demand to be downward sloping.

Hint: Relate the wage-VMPL equality to the law of diminishing marginal product.

Answer

If the wage rate increases, to maintain the w = VMPL equality, VMPL should also increase. Since the price of the commodity remains constant (for a competitive firm), this is only possible if MPL increases. Due to diminishing marginal productivity, an increase in MPL implies that less labour should be employed. Hence, at a higher wage, less labour is demanded.

Explanation

Q17

MCQ Understand Labour Market Supply

In the labour market, who are typically the suppliers of labour and who demands labour?

A Firms supply labour; households demand labour.

B Households supply labour; firms demand labour.

C Government supplies labour; firms demand labour.

D Firms supply labour; government demands labour.

Hint: Consider who provides the work and who hires workers.

Answer

In the labour market, households are the suppliers of labour (offering their work hours) and the demand for labour comes from firms (who wish to hire workers).

Explanation

Q18

MCQ Analyze Individual Labour Supply Curve

An increase in the wage rate can lead to a 'backward bending' individual labour supply curve primarily due to:

A Only the substitution effect, where leisure becomes more costly.

B Only the income effect, where higher income leads to demand for more leisure.

C The interplay of the substitution effect (work more) and the income effect (work less) at different wage levels.

D Firms demanding less labour at higher wages.

Hint: Remember the two opposing effects of a wage change on an individual's decision to work or enjoy leisure.

Answer

An increase in wage rate has two effects: a substitution effect (leisure is costlier, work more) and an income effect (higher purchasing power, demand more leisure, work less). At low wages, the substitution effect dominates; at high wages, the income effect dominates, leading to a backward-bending curve.

Explanation

Q19

MCQ Understand Market Labour Supply Curve

Despite an individual's labour supply curve potentially being backward bending, the market supply curve of labour is generally upward sloping because:

A All individuals' labour supply curves are upward sloping.

B At higher wages, many more individuals are attracted to supply more labour, even if some existing workers reduce hours.

C The law of diminishing marginal product applies to the market supply.

D Firms demand more labour at higher wages.

Hint: Consider the effect of higher wages on the total number of people entering the workforce.

Answer

The market supply curve of labour is obtained by aggregating individuals’ supply at different wages. Though at higher wages some individuals may be willing to work less (backward bending), many more individuals will be attracted to supply more labour, making the overall market supply upward sloping.

Explanation

Q20

MCQ Understand Demand Shift - Normal Good

If consumers' incomes increase, and the commodity in question is a normal good, what is the immediate effect on the market for that commodity (assuming fixed number of firms)?

A The demand curve shifts leftward, leading to a decrease in equilibrium price and quantity.

B The supply curve shifts rightward, leading to a decrease in equilibrium price and an increase in quantity.

C The demand curve shifts rightward, leading to an increase in equilibrium price and quantity.

D Both demand and supply curves shift rightward, with an ambiguous effect on price.

Hint: Recall how income changes affect the demand for normal goods.

Answer

For a normal good, an increase in income leads to an increase in demand at each price, causing the market demand curve to shift rightward. With an unchanged supply curve, this results in a higher equilibrium price and a higher equilibrium quantity.

Explanation

Q21

MCQ Apply Demand Shift - Number of Consumers

An increase in the number of consumers in the market for clothes, with all other factors unchanged, will lead to (assuming fixed number of firms):

A A leftward shift in the supply curve.

B A rightward shift in the demand curve, increasing both equilibrium price and quantity.

C A decrease in the equilibrium price due to increased competition.

D No change in equilibrium price or quantity, only an increase in potential buyers.

Hint: Consider what happens to the total quantity demanded when more people enter the market.

Answer

As the number of consumers increases, at each price, more clothes will be demanded. This causes the demand curve to shift rightward. With an unchanged supply curve, the new equilibrium will have a higher price and higher quantity.

Explanation

Q22

MCQ Understand Supply Shift - Input Price

If the price of an input used in the production of a commodity increases, what is the likely effect on the market (assuming fixed number of firms)?

A The demand curve shifts rightward, increasing equilibrium price and quantity.

B The supply curve shifts rightward, decreasing equilibrium price and increasing quantity.

C The supply curve shifts leftward, increasing equilibrium price and decreasing quantity.

D Both demand and supply curves shift, leading to an uncertain outcome.

Hint: Think about how production costs affect a firm's willingness to supply.

Answer

An increase in the price of an input increases the marginal cost of production. Therefore, at each price, the market supply will be less than before, causing the supply curve to shift leftward. With an unchanged demand curve, this results in a higher equilibrium price and a lower equilibrium quantity.

Explanation

Q23

MCQ Apply Supply Shift - Number of Firms

An increase in the number of firms in a perfectly competitive market, with other factors constant, will result in (assuming fixed number of existing firms, but new ones entering):

A A leftward shift in the supply curve, leading to higher prices.

B A rightward shift in the supply curve, leading to a decrease in price and an increase in quantity.

C A rightward shift in the demand curve, leading to higher prices.

D No change in the supply curve, as individual firms' behavior remains the same.

Hint: Consider how more producers affect the total quantity available at any given price.

Answer

If the number of firms increases, at each price, more firms will supply the commodity, causing the market supply curve to shift to the right. With an unchanged demand curve, this leads to a decrease in the equilibrium price and an increase in the equilibrium quantity.

Explanation

Q24

MCQ Analyze Simultaneous Shifts - Demand Right, Supply Right

If both the demand and supply curves for a commodity shift rightward simultaneously, what is the unambiguous effect on equilibrium?

A Equilibrium price increases.

B Equilibrium quantity increases.

C Equilibrium price decreases.

D Both equilibrium price and quantity decrease.

Hint: Visualize both curves moving to the right. What happens to the quantity traded?

Answer

When both demand and supply curves shift rightward, the equilibrium quantity invariably increases. The effect on equilibrium price, however, may be an increase, decrease, or no change, depending on the magnitude of the shifts.

Explanation

Q25

MCQ Analyze Simultaneous Shifts - Demand Left, Supply Left

What is the unambiguous effect on equilibrium if both demand and supply curves shift leftward simultaneously?

A Equilibrium quantity decreases.

B Equilibrium price increases.

C Equilibrium quantity increases.

D Equilibrium price remains unchanged.

Hint: Think about what happens to the total amount bought and sold when both demand and supply shrink.

Answer

When both demand and supply curves shift leftward, the equilibrium quantity invariably decreases. The effect on equilibrium price may increase, decrease, or remain unchanged, depending on the magnitudes of the shifts.

Explanation

Q26

MCQ Analyze Simultaneous Shifts - Demand Right, Supply Left

If the demand curve shifts rightward and the supply curve shifts leftward simultaneously, what is the unambiguous effect on equilibrium?

A Equilibrium quantity increases.

B Equilibrium quantity decreases.

C Equilibrium price increases.

D Equilibrium price decreases.

Hint: Consider how both shifts individually affect price and quantity, then combine their unambiguous effects.

Answer

When demand shifts rightward (increasing price) and supply shifts leftward (increasing price), both forces push the equilibrium price up, making the increase in equilibrium price unambiguous. The effect on quantity depends on the magnitudes of the shifts.

Explanation

Q27

MCQ Analyze Simultaneous Shifts - Demand Left, Supply Right

If the demand curve shifts leftward and the supply curve shifts rightward simultaneously, what is the unambiguous effect on equilibrium?

A Equilibrium quantity increases.

B Equilibrium price decreases.

C Equilibrium price increases.

D Equilibrium quantity decreases.

Hint: Consider how both shifts individually affect price and quantity, then combine their unambiguous effects.

Answer

When demand shifts leftward (decreasing price) and supply shifts rightward (decreasing price), both forces push the equilibrium price down, making the decrease in equilibrium price unambiguous. The effect on quantity depends on the magnitudes of the shifts.

Explanation

Q28

MCQ Remember Free Entry and Exit Equilibrium Condition

In a perfectly competitive market with free entry and exit of firms, the equilibrium price will always be equal to:

A The maximum average cost of the firms.

B The marginal revenue product of labour.

C The minimum average cost of the firms.

D The total revenue of the firms.

Hint: Think about the profit motive and how it drives entry and exit.

Answer

With free entry and exit, firms will enter if supernormal profits are earned (price > min AC) and exit if losses are incurred (price < min AC). This adjustment ensures that in equilibrium, the price will always be equal to the minimum average cost (p = min AC).

Explanation

Q29

MCQ Understand Free Entry and Exit Adjustment

If, in a market with free entry and exit, firms are earning supernormal profits, what adjustment will occur?

A Existing firms will reduce their output, causing prices to rise further.

B New firms will be attracted to enter the market, shifting the supply curve rightward and causing prices to fall.

C Consumers will reduce their demand due to high prices, restoring equilibrium.

D The government will impose a price ceiling to regulate profits.

Hint: Consider the incentive for new businesses when existing ones are highly profitable.

Answer

The possibility of earning supernormal profit will attract new firms. As new firms enter, the market supply curve shifts rightward, and demand remains unchanged. This causes the market price to fall, eventually wiping out supernormal profits.

Explanation

Q30

MCQ Understand Free Entry and Exit Adjustment

What happens if firms in a perfectly competitive market with free entry and exit are earning less than normal profit?

A New firms will enter, increasing supply and lowering prices.

B Some existing firms will exit the market, leading to an increase in price.

C Demand for the product will increase, raising prices.

D Firms will continue to operate indefinitely at a loss.

Hint: Think about the incentive for businesses when they are not covering their costs.

Answer

If firms are earning less than normal profit (incurring losses), some firms will exit the market. This reduces market supply, shifting the supply curve leftward, which leads to an increase in price until profits return to the normal level.

Explanation

Q31

MCQ Apply Equilibrium Calculation (Free Entry/Exit)

In a market with free entry and exit, if the minimum average cost (min AC) for identical firms is Rs 20, and the demand curve is `qD = 200 - p`, what is the equilibrium quantity?

A 180 kg

B 200 kg

C 120 kg

D 20 kg

Hint: Remember the key condition for equilibrium with free entry and exit, then use the demand curve.

Answer

With free entry and exit, the equilibrium price (p0) equals the minimum average cost. So, p0 = 20. Substitute this into the demand curve: q0 = 200 - 20 = 180 kg. The equilibrium quantity is 180 kg.

Explanation

Q32

MCQ Apply Number of Firms (Free Entry/Exit)

Continuing from the previous question, if the equilibrium quantity is 180 kg and each firm supplies `qf = 10 + p` (with min AC = Rs 20), what is the equilibrium number of firms?

A 9 firms

B 18 firms

C 6 firms

D 30 firms

Hint: Calculate individual firm supply at the equilibrium price, then divide total quantity by individual quantity.

Answer

First, find the quantity supplied by a single firm at the equilibrium price (p0 = 20): qf = 10 + 20 = 30 kg. Then, divide the total equilibrium quantity by the quantity supplied per firm: n0 = Q0 / qf = 180 / 30 = 6 firms.

Explanation

Q33

MCQ Analyze Demand Shift (Free Entry/Exit)

When the market demand curve shifts rightward in a perfectly competitive market with free entry and exit, what is the effect on equilibrium price, quantity, and number of firms?

A Price increases, quantity increases, number of firms increases.

B Price remains unchanged, quantity increases, number of firms increases.

C Price decreases, quantity increases, number of firms decreases.

D Price remains unchanged, quantity decreases, number of firms decreases.

Hint: Remember the key characteristic of equilibrium with free entry and exit, and how demand changes affect entry/exit.

Answer

With free entry and exit, the equilibrium price is always equal to the minimum average cost, so it remains unchanged. A rightward shift in demand creates excess demand at the old price, leading to supernormal profits, attracting new firms. This increases total supply, meeting the higher demand at the original equilibrium price, resulting in a higher equilibrium quantity and more firms.

Explanation

Q34

MCQ Analyze Demand Shift (Free Entry/Exit)

If the market demand curve shifts leftward in a perfectly competitive market with free entry and exit, what is the effect on equilibrium price, quantity, and number of firms?

A Price increases, quantity decreases, number of firms decreases.

B Price remains unchanged, quantity increases, number of firms increases.

C Price remains unchanged, quantity decreases, number of firms decreases.

D Price decreases, quantity decreases, number of firms decreases.

Hint: Remember the key characteristic of equilibrium with free entry and exit, and how demand changes affect entry/exit.

Answer

With free entry and exit, the equilibrium price remains unchanged at min AC. A leftward shift in demand creates excess supply at the old price, leading to losses, causing existing firms to exit. This reduces total supply, meeting the lower demand at the original equilibrium price, resulting in a lower equilibrium quantity and fewer firms.

Explanation

Q35

MCQ Analyze Comparison of Market Structures

How does the impact of a shift in demand on equilibrium quantity differ between a market with a fixed number of firms and a market with free entry and exit?

A The effect on quantity is more pronounced with fixed firms.

B The effect on quantity is more pronounced with free entry and exit.

C The effect on quantity is the same in both market structures.

D With fixed firms, quantity changes, but with free entry/exit, it does not.

Hint: Consider which market structure allows for a greater adjustment capacity to changes in demand.

Answer

With free entry and exit, a demand shift has a larger effect on quantity because the number of firms can adjust (enter or exit) to meet the new demand at the constant equilibrium price. With fixed firms, the adjustment is solely through price and existing firms' output, which might be less flexible.

Explanation

Q36

MCQ Remember Price Ceiling Definition

What is a 'price ceiling'?

A A government-imposed lower limit on the price of a good or service.

B A government-imposed upper limit on the price of a good or service.

C The price at which market demand equals market supply.

D The maximum profit a firm can earn.

Hint: This is a form of government intervention to control prices from above.

Answer

Price ceiling is the government-imposed upper limit on the price of a good or service.

Explanation

Q37

MCQ Understand Price Ceiling Effect

For a price ceiling to be effective and impact the market, it must be set:

A Above the equilibrium price.

B Exactly at the equilibrium price.

C Below the equilibrium price.

D At a level that maximizes government revenue.

Hint: Think about whether a ceiling above the current market price would have any immediate effect.

Answer

Price ceiling is generally imposed on necessary items and is fixed below the market-determined (equilibrium) price, because at the market-determined price some section of the population would not be able to afford these goods.

Explanation

Q38

MCQ Analyze Price Ceiling Consequences

What is a common consequence of imposing a price ceiling below the equilibrium price in a market?

A An excess supply (surplus) of the good.

B An increase in the quantity supplied by firms.

C An excess demand (shortage) of the good.

D A decrease in the quantity demanded by consumers.

Hint: Consider the impact of a legally mandated lower price on both buyers' and sellers' behavior.

Answer

When the government imposes a price ceiling (pc) which is lower than the equilibrium price level (p*), at pc, the quantity demanded will exceed the quantity supplied, resulting in excess demand or a shortage of the commodity.

Explanation

Q39

MCQ Understand Price Ceiling Adverse Effects

Which of the following is an adverse consequence for consumers due to a price ceiling accompanied by rationing?

A Increased availability of goods in normal shops.

B Shorter queues and immediate access to goods.

C Creation of black markets where goods are sold at higher prices.

D A reduction in the overall demand for the good.

Hint: Think about what happens when a desired good is in short supply and officially restricted.

Answer

Adverse consequences of price ceilings with rationing include consumers having to stand in long queues and the creation of black markets where consumers willing to pay more can obtain goods not available at fair price shops.

Explanation

Q40

MCQ Remember Price Floor Definition

What is a 'price floor'?

A A government-imposed maximum price for a good or service.

B The price at which excess demand exists.

C A government-imposed lower limit on the price that may be charged for a particular good or service.

D The price that ensures zero profit for firms.

Hint: This is a form of government intervention to control prices from below.

Answer

Price floor is the government-imposed lower limit on the price that may be charged for a particular good or service.

Explanation

Q41

MCQ Understand Price Floor Effect

For a price floor to be effective and impact the market, it must be set:

A Below the equilibrium price.

B Exactly at the equilibrium price.

C At a level that discourages production.

D Above the equilibrium price.

Hint: Think about whether a floor below the current market price would have any immediate effect.

Answer

Price floors are normally set at a level higher than the market-determined (equilibrium) price for these goods. If it were below or at equilibrium, it would not prevent the price from falling below that level.

Explanation

Q42

MCQ Analyze Price Floor Consequences

What is a common consequence of imposing a price floor above the equilibrium price in a market?

A An excess demand (shortage) of the good.

B An increase in the quantity demanded by consumers.

C An excess supply (surplus) of the good.

D A decrease in the quantity supplied by firms.

Hint: Consider the impact of a legally mandated higher price on both buyers' and sellers' behavior.

Answer

When the government imposes a floor higher than the equilibrium price, the market demand (qf) will be less than the quantity firms want to supply (q'f) at that price, leading to an excess supply (surplus) in the market.

Explanation

Q43

MCQ Understand Price Floor Examples

Which of the following is a well-known example of the imposition of a price floor?

A Rent control on apartments.

B Subsidies for essential goods like kerosene.

C Minimum wage legislation.

D Taxation on luxury goods.

Hint: Think about policies that set a minimum payment level.

Answer

Most well-known examples of imposition of price floor are agricultural price support programmes and the minimum wage legislation.

Explanation

Q44

MCQ Apply Price Ceiling Scenario

If the government imposes a price ceiling on apartments (rent control) that is below the market-determined rent, what is the most likely immediate outcome in the apartment market?

A An increase in the supply of apartments.

B A surplus of available apartments.

C A shortage of apartments as demand exceeds supply at the controlled price.

D A decrease in the number of people seeking apartments.

Hint: Relate rent control to the concept of a price ceiling and its general effects.

Answer

A price ceiling set below the equilibrium price creates excess demand. At the lower controlled rent, more people will want to rent apartments (increased quantity demanded), but fewer landlords will be willing to offer them (decreased quantity supplied), leading to a shortage.

Explanation

Q45

MCQ Analyze Market Interrelationships (Substitutes)

Using supply and demand analysis, if the price of coffee increases significantly, what effect would it likely have on the equilibrium price and quantity of tea (assuming tea is a substitute for coffee)?

A Equilibrium price of tea decreases, and quantity decreases.

B Equilibrium price of tea increases, and quantity increases.

C Equilibrium price of tea increases, and quantity decreases.

D Equilibrium price of tea decreases, and quantity increases.

Hint: Think about how consumers react to a price change in a substitute good.

Answer

If coffee and tea are substitutes, an increase in the price of coffee will make tea relatively cheaper and more attractive. This causes the demand curve for tea to shift rightward. With an unchanged supply curve for tea, the new equilibrium will feature a higher price and a higher quantity of tea.

Explanation

Q46

MCQ Analyze Market Interrelationships (Complements)

If the price of shoes increases, what impact would this typically have on the equilibrium price and quantity of socks (assuming shoes and socks are complements)?

A Equilibrium price of socks increases, and quantity increases.

B Equilibrium price of socks decreases, and quantity decreases.

C Equilibrium price of socks increases, and quantity decreases.

D Equilibrium price of socks decreases, and quantity increases.

Hint: Consider how a price change in one good affects the demand for a good that is consumed with it.

Answer

If shoes and socks are complements, an increase in the price of shoes will lead to a decrease in the quantity demanded of shoes. Since socks are typically bought with shoes, the demand for socks will also decrease, shifting the demand curve for socks leftward. With an unchanged supply curve for socks, this results in a lower equilibrium price and a lower equilibrium quantity of socks.

Explanation

Q47

MCQ Understand Role of Price Takers

In Chapters 2 and 4, consumers and firms were studied as 'price takers.' What does 'price taker' imply for their individual behavior?

A They can influence the market price through their individual actions.

B They must accept the market price as given and adjust their quantity accordingly.

C They actively negotiate prices with each other.

D They are indifferent to the market price.

Hint: Consider the characteristics of perfectly competitive markets and the power of individual participants.

Answer

Being a 'price taker' means that individual consumers and firms are so small relative to the overall market that they cannot influence the market price. They must accept the prevailing market price as given and make their buying or selling decisions based on that price.

Explanation

Q48

MCQ Analyze Impact of Demand Shift on Price/Quantity (Fixed vs. Free Entry)

A shift in the demand curve generally has a larger effect on price and a smaller effect on quantity when the number of firms is fixed, compared to when free entry and exit is permitted. Why is this the case?

A With fixed firms, there are more substitutes, making demand more elastic.

B With free entry/exit, price is flexible, allowing for significant price changes.

C With fixed firms, supply is less elastic, meaning price must change more to clear the market, while quantity adjustment is limited.

D Free entry/exit leads to greater uncertainty, making price more volatile.

Hint: Compare the elasticity of the supply curve in both scenarios.

Answer

When the number of firms is fixed, the supply curve has a positive slope (it's not perfectly elastic). A demand shift will cause both price and quantity to change along this less elastic supply curve. However, with free entry and exit, the supply curve effectively becomes perfectly elastic at the minimum average cost. Thus, a demand shift primarily affects quantity (as firms enter/exit) with no change in price.

Explanation

Q49

MCQ Apply Equilibrium Price (Fixed Firms) with Zero Supply Condition

Suppose `qD = 700 - p` and `qS = 500 + 3p` for `p >= 15`, and `qS = 0` for `0 <= p < 15`. What is the equilibrium price for this commodity?

A Rs 15

B Rs 50

C Rs 700

D Rs 200

Hint: Set demand equal to supply and solve for price, then check if the price satisfies the supply condition.

Answer

First, equate demand and supply: 700 - p = 500 + 3p. This yields 200 = 4p, so p = 50. Since Rs 50 is >= 15, this is a valid equilibrium price. If we checked a price below 15, supply would be 0, leading to huge excess demand.

Explanation

Q50

MCQ Apply Equilibrium Quantity (Fixed Firms) with Zero Supply Condition

Using the demand `qD = 700 - p` and supply `qS = 500 + 3p` (for `p >= 15`) from the previous question, what is the equilibrium quantity at the equilibrium price of Rs 50?

A 400 units

B 650 units

C 500 units

D 700 units

Hint: Plug the equilibrium price back into either the demand or supply equation.

Answer

Substitute the equilibrium price p = 50 into either the demand or supply equation. Using demand: qD = 700 - 50 = 650 units. Using supply: qS = 500 + 3(50) = 500 + 150 = 650 units. The equilibrium quantity is 650 units.

Explanation

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