Question 1

In a perfectly competitive market, how does a firm determine the optimal amount of labor to employ?

Accepted Answer

Correct Option: A. Solution: In a perfectly competitive market, a firm employs labor up to the point where the wage rate equals the marginal revenue product of labor (MRPL), which is the product of marginal revenue and marginal product of labor.

Question 2

What is the effect on equilibrium when both demand and supply curves shift rightward?

Accepted Answer

Correct Option: C. Solution: When both demand and supply curves shift rightward, the equilibrium quantity increases, but the change in equilibrium price depends on the magnitude of the shifts.

Question 3

In a market with free entry and exit, what happens when the demand curve shifts rightward?

Accepted Answer

Correct Option: C. Solution: With free entry and exit, a rightward shift in demand increases the equilibrium quantity and number of firms, but the equilibrium price remains unchanged.

Question 4

How does a leftward shift in the demand curve affect a market with free entry and exit?

Accepted Answer

Correct Option: C. Solution: With free entry and exit, a leftward shift in demand results in a decrease in the number of firms, but the equilibrium price remains at the minimum average cost.

Question 5

What happens to the equilibrium quantity and price when a price floor is imposed above the equilibrium price?

Accepted Answer

Correct Option: A. Solution: A price floor above the equilibrium price leads to a decrease in the equilibrium quantity and an increase in the price, resulting in excess supply.

Question 6

What happens to the equilibrium wage and employment level if there is a rightward shift in the labour demand curve in a perfectly competitive market?

Accepted Answer

Correct Option: C. Solution: A rightward shift in the labour demand curve indicates an increase in demand for labour, leading to higher equilibrium wages and increased employment levels.

Question 7

What happens to the equilibrium price and quantity when both demand and supply curves shift rightward?

Accepted Answer

Correct Option: C. Solution: When both demand and supply curves shift rightward, the equilibrium quantity increases while the equilibrium price may remain unchanged, depending on the magnitude of shifts.

Question 8

If the market price is set below the equilibrium price, what is the likely outcome?

Accepted Answer

Correct Option: B. Solution: A price set below the equilibrium price results in excess demand as more consumers want to buy the product than what is available.

Question 9

In the context of labor markets, which of the following statements correctly describes the relationship between the marginal revenue product of labor (MRPL) and the wage rate for a firm in equilibrium?

Accepted Answer

Correct Option: A. Solution: In equilibrium, a firm will employ labor up to the point where the marginal revenue product of labor (MRPL) is equal to the wage rate, ensuring maximum profit.

Question 10

What is the effect on equilibrium quantity when both demand and supply curves shift rightwards simultaneously?

Accepted Answer

Correct Option: A. Solution: When both demand and supply curves shift rightwards, the equilibrium quantity increases as indicated in Table 5.1.

Question 11

What is the Marginal Revenue Product of Labour (MRPL) in a perfectly competitive market?

Accepted Answer

Correct Option: C. Solution: The Marginal Revenue Product of Labour (MRPL) is calculated as Marginal Revenue times Marginal Product of Labour, representing the additional benefit from hiring one more unit of labour.

Question 12

What is the effect on the number of firms in a market with free entry and exit if the demand for the product increases?

Accepted Answer

Correct Option: C. Solution: With free entry and exit, an increase in demand leads to more firms entering the market until normal profits are restored, thus increasing the number of firms.

Question 13

How does a price floor affect the market for agricultural goods?

Accepted Answer

Correct Option: B. Solution: A price floor set above the equilibrium price in agricultural markets leads to a surplus as the quantity supplied exceeds the quantity demanded.

Question 14

Which of the following statements is true regarding the supply of labour in a perfectly competitive market?

Accepted Answer

Correct Option: B. Solution: In a perfectly competitive market, the supply curve of labour is upward sloping because households supply more labour at higher wage rates.

Question 15

What is the likely market outcome when a price floor is set above the equilibrium price?

Accepted Answer

Correct Option: B. Solution: A price floor set above the equilibrium price results in excess supply as firms are willing to supply more than consumers are willing to buy.

Question 16

In a perfectly competitive market with free entry and exit, what is the equilibrium price equal to?

Accepted Answer

Correct Option: B. Solution: In a perfectly competitive market with free entry and exit, the equilibrium price is always equal to the minimum average cost of the firms.

Question 17

If the market supply curve shifts rightward in a market with fixed number of firms, what happens to the equilibrium price and quantity?

Accepted Answer

Correct Option: B. Solution: A rightward shift in the supply curve, with demand constant, leads to a decrease in equilibrium price and an increase in equilibrium quantity.

Question 18

Why is the demand curve for labour downward sloping in a perfectly competitive market?

Accepted Answer

Correct Option: C. Solution: The demand curve for labour is downward sloping because, due to the law of diminishing marginal product, the Marginal Product of Labour decreases as more labour is employed.

Question 19

In a perfectly competitive market, if both the demand and supply curves shift rightward simultaneously, what can be said about the equilibrium price and quantity?

Accepted Answer

Correct Option: C. Solution: When both demand and supply curves shift rightward, the equilibrium quantity increases invariably, but the effect on equilibrium price depends on the relative magnitudes of the shifts. It may increase, decrease, or remain unchanged.

Question 20

How does free entry and exit of firms in a perfectly competitive market affect the equilibrium price?

Accepted Answer

Correct Option: C. Solution: In a perfectly competitive market with free entry and exit, the equilibrium price is equal to the minimum average cost, ensuring firms earn normal profit.

Question 21

If a government imposes a price ceiling below the equilibrium price, what is a likely consequence?

Accepted Answer

Correct Option: B. Solution: A price ceiling below the equilibrium price results in excess demand as consumers demand more than what is supplied at that price.

Question 22

In a perfectly competitive market, what is the effect on equilibrium when both demand and supply curves shift leftward?

Accepted Answer

Correct Option: B. Solution: When both demand and supply curves shift leftward, the equilibrium quantity decreases, but the effect on price depends on the magnitude of the shifts.

Question 23

How does free entry and exit affect the equilibrium price in a perfectly competitive market?

Accepted Answer

Correct Option: C. Solution: In a perfectly competitive market with free entry and exit, the equilibrium price is always equal to the minimum average cost of the firms.

Question 24

What is the primary effect of imposing a price ceiling below the equilibrium price in a market?

Accepted Answer

Correct Option: B. Solution: A price ceiling set below the equilibrium price results in excess demand as the quantity demanded exceeds the quantity supplied at the ceiling price.

Question 25

If a government imposes a price ceiling on wheat below the equilibrium price, what is a potential consequence?

Accepted Answer

Correct Option: B. Solution: Imposing a price ceiling below the equilibrium price can lead to excess demand, resulting in shortages and potentially creating a black market.

Question 26

In a perfectly competitive market with free entry and exit, what happens to the equilibrium price if the demand curve shifts rightward?

Accepted Answer

Correct Option: C. Solution: With free entry and exit, the equilibrium price remains equal to the minimum average cost, so it remains unchanged despite a rightward shift in demand.

Question 27

If the demand curve shifts leftward and the supply curve shifts rightward, what can be said about the equilibrium price?

Accepted Answer

Correct Option: B. Solution: When the demand curve shifts leftward and the supply curve shifts rightward, the equilibrium price decreases as shown in Figure 5.4(b).

Question 28

If the market price is above the equilibrium price, what is likely to occur?

Accepted Answer

Correct Option: B. Solution: When the market price is above the equilibrium price, market supply exceeds market demand, leading to excess supply.

Question 29

How does the imposition of a price ceiling below the equilibrium price affect the market?

Accepted Answer

Correct Option: B. Solution: A price ceiling set below the equilibrium price results in excess demand as the price is lower than what the market would naturally set.

Question 30

How does an increase in consumer income affect the market equilibrium for a normal good?

Accepted Answer

Correct Option: B. Solution: For a normal good, an increase in consumer income shifts the demand curve rightward, leading to higher equilibrium price and quantity.

Question 31

What happens to the demand for labour when the wage rate increases in a perfectly competitive market?

Accepted Answer

Correct Option: B. Solution: In a perfectly competitive market, the demand for labour decreases as the wage rate increases due to the law of diminishing marginal product.

Question 32

In a perfectly competitive market, what happens to the equilibrium price and quantity when there is a simultaneous rightward shift in both the demand and supply curves?

Accepted Answer

Correct Option: C. Solution: When both demand and supply curves shift rightward, the equilibrium quantity increases, but the equilibrium price remains unchanged if the shifts are of equal magnitude.

Question 33

Which of the following is a potential consequence of a government-imposed price ceiling?

Accepted Answer

Correct Option: B. Solution: A price ceiling can lead to the creation of a black market as consumers are willing to pay more than the ceiling price to obtain the limited supply.

Question 34

In a perfectly competitive market, when will a firm stop hiring additional labour?

Accepted Answer

Correct Option: A. Solution: A firm will stop hiring additional labour when the wage rate equals the marginal revenue product of labour, as this is the point where the cost of hiring an additional unit of labour equals the revenue generated from it.

Question 35

How does a price floor above the equilibrium price affect the market?

Accepted Answer

Correct Option: B. Solution: A price floor set above the equilibrium price causes excess supply, as the quantity supplied exceeds the quantity demanded at the floor price.

Question 36

What happens to the equilibrium price and quantity if the input price for a commodity increases, assuming all other factors remain constant?

Accepted Answer

Correct Option: B. Solution: An increase in input price raises production costs, shifting the supply curve leftward, leading to a higher equilibrium price and a lower equilibrium quantity.

Question 37

What is the effect on the number of firms in the market when there is a leftward shift in demand under free entry and exit?

Accepted Answer

Correct Option: B. Solution: A leftward shift in demand decreases the equilibrium quantity and the number of firms, as some firms exit the market.

Question 38

Which of the following describes the 'Invisible Hand' in a perfectly competitive market?

Accepted Answer

Correct Option: C. Solution: The 'Invisible Hand' refers to the self-regulating nature of the market that adjusts prices to eliminate excess demand or supply, moving towards equilibrium.

Question 39

In a perfectly competitive market, if the price is set below the equilibrium price, what economic phenomenon is likely to occur?

Accepted Answer

Correct Option: B. Solution: When the price is below the equilibrium price, the quantity demanded exceeds the quantity supplied, leading to excess demand.

Question 40

In a perfectly competitive labour market, how is the wage rate determined?

Accepted Answer

Correct Option: A. Solution: In a perfectly competitive labour market, the wage rate is determined at the intersection of the labour demand and supply curves, where the demand for and supply of labour balance.

Question 41

If both demand and supply curves shift rightward simultaneously, what is the certain outcome regarding equilibrium quantity?

Accepted Answer

Correct Option: C. Solution: When both demand and supply curves shift rightward, the equilibrium quantity unambiguously increases, though the effect on price depends on the magnitude of shifts.

Question 42

What is market equilibrium in a perfectly competitive market?

Accepted Answer

Correct Option: A. Solution: Market equilibrium is defined as the point where the market demand equals market supply, determining the equilibrium price and quantity.

Question 43

What is a price ceiling?

Accepted Answer

Correct Option: B. Solution: A price ceiling is a government-imposed maximum price set below the equilibrium price, leading to excess demand.

Question 44

If the market for a commodity is initially in equilibrium and the government imposes a price ceiling below the equilibrium price, what is the likely outcome?

Accepted Answer

Correct Option: B. Solution: A price ceiling set below the equilibrium price results in excess demand because the quantity demanded exceeds the quantity supplied at the ceiling price.

Question 45

If the marginal revenue product of labour (MRPL) is greater than the wage rate, what should a profit-maximizing firm do?

Accepted Answer

Correct Option: A. Solution: A profit-maximizing firm should hire more labour if the MRPL is greater than the wage rate, as this would increase profits.

Question 46

If the marginal revenue product of labor (MRPL) is greater than the wage rate, what should a profit-maximizing firm do?

Accepted Answer

Correct Option: A. Solution: A profit-maximizing firm will hire more labor as long as the MRPL is greater than the wage rate, since the additional revenue from hiring more labor exceeds the additional cost.

Question 47

In a perfectly competitive market, if the market demand curve shifts rightward while the supply curve remains unchanged, what is the expected effect on the equilibrium price and quantity?

Accepted Answer

Correct Option: C. Solution: When the market demand curve shifts rightward with the supply curve unchanged, there is an increase in both equilibrium price and quantity as the demand at each price level is higher than before.

Question 48

In a perfectly competitive market with free entry and exit, what is the relationship between the equilibrium price and the firms' costs?

Accepted Answer

Correct Option: C. Solution: In such markets, the equilibrium price is always equal to the minimum average cost, ensuring that firms earn normal profits.

Question 49

In the context of market equilibrium, what does the 'Invisible Hand' refer to?

Accepted Answer

Correct Option: B. Solution: The 'Invisible Hand' refers to the self-regulating nature of the market, where prices adjust naturally to eliminate excess supply or demand, moving towards equilibrium.

Question 50

In a perfectly competitive market, what is the result of excess supply?

Accepted Answer

Correct Option: B. Solution: Excess supply leads to a decrease in prices as firms lower prices to sell their surplus goods.

Question 51

In a perfectly competitive labour market, how is the wage rate determined?

Accepted Answer

Correct Option: A. Solution: In a perfectly competitive labour market, the wage rate is determined at the intersection of the demand and supply curves of labour.

Question 52

How does an increase in the wage rate affect the labour supply curve in the short run?

Accepted Answer

Correct Option: C. Solution: An increase in the wage rate causes a movement along the supply curve as individuals decide to supply more or less labour based on the trade-off between income and leisure.

Question 53

In a market with free entry and exit, what is the expected long-term effect on the equilibrium price?

Accepted Answer

Correct Option: C. Solution: In a market with free entry and exit, firms will enter or exit until the equilibrium price equals the minimum average cost, ensuring only normal profits.

Question 54

How does an increase in the price of an input affect the supply curve and market equilibrium?

Accepted Answer

Correct Option: B. Solution: An increase in input prices raises production costs, shifting the supply curve leftward, leading to a higher equilibrium price and lower quantity.

Question 55

What occurs in the market when a price floor is set above the equilibrium price?

Accepted Answer

Correct Option: B. Solution: A price floor set above the equilibrium price results in excess supply because the quantity supplied exceeds the quantity demanded.

Question 56

In a market with a price ceiling, what mechanism might the government use to distribute the limited supply of goods?

Accepted Answer

Correct Option: B. Solution: The government may use rationing to distribute the limited supply of goods under a price ceiling, ensuring that each consumer receives a fair share.

Question 57

What is the Marginal Revenue Product of Labour (MRPL)?

Accepted Answer

Correct Option: A. Solution: The Marginal Revenue Product of Labour (MRPL) is defined as the additional revenue generated by employing one more unit of labour.

Question 58

If the price of an input increases, leading to a leftward shift in the supply curve, what is the expected impact on equilibrium price and quantity?

Accepted Answer

Correct Option: B. Solution: An increase in input price shifts the supply curve leftward, resulting in higher equilibrium price and lower equilibrium quantity.

Question 59

What happens to the demand curve for labor if the marginal revenue product of labor decreases due to technological advancements?

Accepted Answer

Correct Option: A. Solution: Technological advancements that decrease the marginal product of labor will reduce the marginal revenue product of labor, causing the demand curve for labor to shift to the left.

Question 60

If the supply curve shifts leftward and the demand curve shifts rightward, how does this affect the equilibrium price and quantity in a perfectly competitive market?

Accepted Answer

Correct Option: B. Solution: When the supply curve shifts leftward and the demand curve shifts rightward, the equilibrium price unambiguously increases. However, the effect on equilibrium quantity depends on the relative magnitudes of the shifts and may increase, decrease, or remain unchanged.

Question 61

What happens to the price in a market when there is excess demand?

Accepted Answer

Correct Option: C. Solution: In a situation of excess demand, the price tends to increase as consumers are willing to pay more to obtain the commodity.

Question 62

What is the effect on equilibrium price and quantity if there is an increase in the price of an input used in production?

Accepted Answer

Correct Option: B. Solution: An increase in the price of an input raises production costs, leading to a leftward shift in the supply curve, which increases the equilibrium price and decreases the equilibrium quantity.

Question 63

What is the implication of free entry and exit in a perfectly competitive market?

Accepted Answer

Correct Option: C. Solution: In markets with free entry and exit, firms earn normal profits in the long run as the equilibrium price equals the minimum average cost.

Question 64

In a market where a price floor is imposed above the equilibrium price, what is the most likely outcome?

Accepted Answer

Correct Option: B. Solution: When a price floor is set above the equilibrium price, the quantity supplied exceeds the quantity demanded, leading to excess supply. The government may intervene by purchasing the surplus to maintain the price floor.

Shift in Demand	Shift in Supply	Quantity Change	Price Change
Leftward	Leftward	Decreases	May vary
Rightward	Rightward	Increases	May vary
Leftward	Rightward	May vary	Decreases
Rightward	Leftward	May vary	Increases

Market Equilibrium

Learning Objectives

Revision Notes & Summary

Chapter 5: Market Equilibrium

5.1 Equilibrium, Excess Demand, Excess Supply

Key Concepts

Graphical Representation

5.1.1 Market Equilibrium: Fixed Number of Firms

Effects of Shifts in Demand and Supply

5.1.2 Market Equilibrium: Free Entry and Exit

Table 5.1: Impact of Simultaneous Shifts on Equilibrium

Important Definitions

Conclusion

Exam Tips & Common Mistakes

Common Mistakes and Exam Tips

Common Pitfalls

Tips for Exam Preparation

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Practice Test – MCQs, True/False

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Multiple Choice Questions

Q1.In a perfectly competitive market, how does a firm determine the optimal amount of labor to employ?

Correct Answer: A

Q2.What is the effect on equilibrium when both demand and supply curves shift rightward?

Correct Answer: C

Q3.In a market with free entry and exit, what happens when the demand curve shifts rightward?

Correct Answer: C

Q4.How does a leftward shift in the demand curve affect a market with free entry and exit?

Correct Answer: C

Q5.What happens to the equilibrium quantity and price when a price floor is imposed above the equilibrium price?

Correct Answer: A

Q6.What happens to the equilibrium wage and employment level if there is a rightward shift in the labour demand curve in a perfectly competitive market?

Correct Answer: C

Q7.What happens to the equilibrium price and quantity when both demand and supply curves shift rightward?

Correct Answer: C

Q8.If the market price is set below the equilibrium price, what is the likely outcome?

Correct Answer: B

Q9.In the context of labor markets, which of the following statements correctly describes the relationship between the marginal revenue product of labor (MRPL) and the wage rate for a firm in equilibrium?

Correct Answer: A

Q10.What is the effect on equilibrium quantity when both demand and supply curves shift rightwards simultaneously?

Correct Answer: A

Q11.What is the Marginal Revenue Product of Labour (MRPL) in a perfectly competitive market?

Correct Answer: C

Q12.What is the effect on the number of firms in a market with free entry and exit if the demand for the product increases?

Correct Answer: C

Q13.How does a price floor affect the market for agricultural goods?

Correct Answer: B

Q14.Which of the following statements is true regarding the supply of labour in a perfectly competitive market?

Correct Answer: B

Q15.What is the likely market outcome when a price floor is set above the equilibrium price?

Correct Answer: B

Q16.In a perfectly competitive market with free entry and exit, what is the equilibrium price equal to?

Correct Answer: B

Q17.If the market supply curve shifts rightward in a market with fixed number of firms, what happens to the equilibrium price and quantity?

Correct Answer: B

Q18.Why is the demand curve for labour downward sloping in a perfectly competitive market?

Correct Answer: C

Q19.In a perfectly competitive market, if both the demand and supply curves shift rightward simultaneously, what can be said about the equilibrium price and quantity?

Correct Answer: C

Q20.How does free entry and exit of firms in a perfectly competitive market affect the equilibrium price?

Correct Answer: C

Q21.If a government imposes a price ceiling below the equilibrium price, what is a likely consequence?

Correct Answer: B

Q22.In a perfectly competitive market, what is the effect on equilibrium when both demand and supply curves shift leftward?

Correct Answer: B

Q23.How does free entry and exit affect the equilibrium price in a perfectly competitive market?

Correct Answer: C

Q24.What is the primary effect of imposing a price ceiling below the equilibrium price in a market?

Correct Answer: B

Q25.If a government imposes a price ceiling on wheat below the equilibrium price, what is a potential consequence?

Correct Answer: B

Q26.In a perfectly competitive market with free entry and exit, what happens to the equilibrium price if the demand curve shifts rightward?

Correct Answer: C

Q27.If the demand curve shifts leftward and the supply curve shifts rightward, what can be said about the equilibrium price?

Correct Answer: B

Q28.If the market price is above the equilibrium price, what is likely to occur?