CUET UG Booster Economics 5 Test (M3) -

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CUET UG Booster Economics 5 Test (M3)

⏱️ 30 Minutes

❓ 20 Questions

📌 Answers are locked once submitted — results and explanations appear at the end.

CUET UG Booster Economics 5 Test (M3)

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QUESTION 1 OF 20

By the term 'labour' in the demand-supply analysis model, the text specifically refers to:

Answer Review

1 By the term 'labour' in the demand-supply analysis model, the text specifically refers to:

A The total physical number of labourers available.

B The hours of work provided by labourers.

C The total wages paid by the firm.

D The overall efficiency and skill level of the workers.

💡 Short Explanation

Labour refers to hours of work, not the number of workers. Labour is supplied by households. Firms demand labour to produce goods and services.

✅ Correct Answer Explanation

According to the NCERT, labour in labour market analysis means the hours of work supplied by labourers, not simply the number of workers available. This distinction is important because: A worker may supply different numbers of working hours. Labour supply is measured in hours worked, which determines the total labour available in the market. Therefore, Option B correctly defines labour in the demand-supply framework.

❓ Why Other Options Are Incorrect

Option A → Incorrect because NCERT defines labour as hours of work rather than the number of labourers.
Option C → Incorrect because wages represent the payment for labour, not labour itself.
Option D → Incorrect because efficiency or skill affects productivity but does not define labour.

🎯 Strategy

Used

Contextual/Tonal Matching

Application:

Identify the exact NCERT definition of labour used in the labour market chapter.

Final Logic:

Labour is measured by hours of work, making Option B correct.

🧠 Memory Trick

Labour = Hours, Not Heads

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Labour Market – Meaning of Labour

2 Which of the following statements are correct regarding a profit-maximizing firm hiring labour?
I. The firm employs labour up to the point where extra cost equals additional benefit.
II. The firm stops hiring when the wage rate exactly equals MRPL.
III. The firm employs labour to maximize total product regardless of cost.

A I only

B III only

C I and II only

D I, II, and III

💡 Short Explanation

Firms compare the additional cost and additional benefit of hiring labour. A profit-maximizing firm hires labour until W = MRPL. Firms maximize profit, not merely total output.

✅ Correct Answer Explanation

A profit-maximizing firm hires labour until: W = MRPL where: W = Wage rate (additional cost of hiring one more unit of labour) MRPL = Marginal Revenue Product of Labour (additional benefit from hiring one more unit of labour) Therefore: Statement I is correct because firms compare the additional cost with the additional benefit. Statement II is correct because hiring stops when W = MRPL. Statement III is incorrect because firms aim to maximize profit, not total product regardless of cost. Hence, Option C is correct.

🎯 Strategy

Used

Elimination

Application:

Reject Statement III because firms maximize profit, not output.

Final Logic:

Only Statements I and II are correct.

🧠 Memory Trick

Hire Until W = MRPL

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Profit Maximization in Labour Market

3 When determining how much labour to supply, individuals face a fundamental trade-off. They inherently find work irksome but deeply value the:

A Experience gained on the job.

B Social interaction with peers.

C Physical exercise derived from work.

D Income for which they must work.

💡 Short Explanation

Labour provides income. Work involves sacrificing leisure. Individuals work to earn income.

✅ Correct Answer Explanation

According to NCERT, individuals generally regard work as irksome, but they supply labour because it provides income. The labour supply decision reflects the trade-off between income and leisure. People work because wages enable them to purchase goods and services. Therefore, the valued outcome of work is income, making Option D correct.

❓ Why Other Options Are Incorrect

Option A → Incorrect because experience is not the primary motive in the labour supply model.
Option B → Incorrect because social interaction is not the basis of labour supply analysis.
Option C → Incorrect because physical exercise is unrelated to the economic theory of labour supply.

🎯 Strategy

Used

Odd One Out

Application:

Identify the option directly related to the economic objective of supplying labour.

Final Logic:

Income is the economic reward that motivates labour supply.

🧠 Memory Trick

Work → Wage → Income

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Labour Supply and Income–Leisure Trade-off

4 Match the distinct effects of a wage increase with their outcomes:

List I	List II
1. Wage rate rises (Effect 1)	a. Opportunity cost of leisure increases, making it costlier.
2. Wage rate rises (Effect 2)	b. Purchasing power increases, boosting desire to spend on leisure.
3. Outcome at low wage rates	c. First effect dominates, so individual supplies more labour.
4. Outcome at high wage rates	d. Second effect dominates, so individual supplies less labour.

A 1-b, 2-a, 3-d, 4-c

B 1-a, 2-b, 3-c, 4-d

C 1-c, 2-d, 3-a, 4-b

D 1-d, 2-c, 3-b, 4-a

💡 Short Explanation

Wage increases raise the opportunity cost of leisure. Wage increases also raise purchasing power. Substitution effect dominates first; income effect dominates later.

✅ Correct Answer Explanation

When wages rise: Effect 1: Leisure becomes more expensive because its opportunity cost increases. 1 → a Effect 2: Higher income increases purchasing power, encouraging more leisure. 2 → b At lower wages, the substitution effect dominates, leading individuals to work more. 3 → c At higher wages, the income effect dominates, leading individuals to enjoy more leisure and work less. 4 → d Thus, the correct matching is: 1 → a 2 → b 3 → c 4 → d Therefore, Option B is correct.

❓ Why Other Options Are Incorrect

Option A → Incorrect because it reverses the substitution and income effects.
Option C → Incorrect because it mismatches the effects and outcomes.
Option D → Incorrect because it incorrectly pairs all four components.

🎯 Strategy

Used

Option Grouping

Application:

Separate the substitution effect from the income effect before matching each outcome.

Final Logic:

Only Option B correctly matches the wage effects.

🧠 Memory Trick

High Wage → Income Effect Dominates

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Income Effect and Substitution Effect

5 What action will a profit-maximizing firm take if, at its current level of employment, the Value of Marginal Product of Labour (VMPL) is less than the wage rate?

A The firm will hire more labour to balance it.

B The firm will increase profit by reducing a unit of labour.

C The firm will artificially increase the price of output.

D The firm will force the market supply of labour to increase.

💡 Short Explanation

Wage exceeds the value created by the last worker. The last worker costs more than the revenue generated. The firm should reduce employment.

✅ Correct Answer Explanation

A profit-maximizing firm hires labour until: W = VMPL If VMPL < W the last worker contributes less value to production than the wage paid. Therefore, employing that worker reduces the firm's profit. The firm can increase its profit by reducing one unit of labour until: W = VMPL is restored. Hence, Option B is correct.

❓ Why Other Options Are Incorrect

Option A → Incorrect because hiring more workers would reduce VMPL further due to diminishing marginal productivity.
Option C → Incorrect because a perfectly competitive firm cannot influence the market price.
Option D → Incorrect because an individual firm cannot control market labour supply.

🎯 Strategy

Used

Substitution

Application:

Compare the wage rate with VMPL using the firm's profit-maximizing condition.

Final Logic:

If VMPL < W → Reduce Labour

🧠 Memory Trick

VMPL < Wage → Fire One Worker

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Profit-Maximizing Labour Employment Condition

6 In a perfectly competitive firm's decision-making process, the given market wage rate acts explicitly as the:

A Total cost threshold for the firm.

B Average revenue for the firm.

C Extra cost of hiring one more unit of labour.

D Minimum price floor set by the government.

💡 Short Explanation

Wage is the firm's cost of employing labour. Each additional worker adds one more wage payment. Hence, wage is the marginal (extra) cost of hiring labour.

✅ Correct Answer Explanation

A profit-maximizing firm compares the additional benefit from hiring one more worker with the additional cost of hiring that worker. The additional cost is the market wage rate (W) because a perfectly competitive firm is a wage taker. The profit-maximizing condition is: W = MRPL where: W = Additional cost of hiring one more worker MRPL = Additional benefit from hiring one more worker Therefore, Option C is correct.

❓ Why Other Options Are Incorrect

Option A → Incorrect because wage is the marginal labour cost, not the firm's total cost.
Option B → Incorrect because average revenue relates to the sale of output, not labour hiring.
Option D → Incorrect because the market wage is determined by labour demand and supply, not by a government price floor in this context.

🎯 Strategy

Used

Contextual/Tonal Matching

Application:

Identify the economic meaning of wage in the firm's hiring decision.

Final Logic:

Wage represents the extra cost of employing one additional worker.

🧠 Memory Trick

Hire One More → Pay One More Wage

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Wage Rate as Marginal Cost of Labour

7 The additional benefit a firm earns from hiring an extra unit of labour is mathematically equal to marginal ________ times marginal ________.

A cost, utility

B product, cost

C revenue, cost

D revenue, product

💡 Short Explanation

Additional benefit is measured by MRPL. MRPL depends on MR and MPL. Multiply marginal revenue by marginal product.

✅ Correct Answer Explanation

The additional benefit obtained from hiring one more unit of labour is called the Marginal Revenue Product of Labour (MRPL). It is calculated as: MRPL = MR × MPL where: MR = Marginal Revenue MPL = Marginal Product of Labour Thus, the blanks are filled with marginal revenue and marginal product. Therefore, Option D is correct.

❓ Why Other Options Are Incorrect

Option A → Incorrect because utility is not part of the MRPL formula.
Option B → Incorrect because marginal cost is not multiplied with marginal product.
Option C → Incorrect because MRPL is not calculated using marginal cost.

🎯 Strategy

Used

Substitution

Application:

Recall the standard NCERT formula for MRPL.

Final Logic:

MRPL = MR × MPL

🧠 Memory Trick

Benefit = Revenue × Product

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Marginal Revenue Product of Labour

8 Assertion (A): The market demand curve for labour is typically upward sloping.
Reason (R): As the wage rate increases, the firm employs more labour due to an increasing marginal product.

A Both false

B A true, R false

C Both true, R explains A

D A false, R true

💡 Short Explanation

Labour demand is downward sloping. Higher wages reduce labour demanded. MPL follows the law of diminishing marginal productivity.

✅ Correct Answer Explanation

The Assertion is false because the market demand curve for labour is downward sloping, not upward sloping. The Reason is also false because when the wage rate increases, firms employ less labour, not more. Due to the Law of Diminishing Marginal Productivity, the marginal product of labour falls as more labour is employed while other factors remain fixed. Therefore: Assertion → False Reason → False Hence, Option A is correct.

❓ Why Other Options Are Incorrect

Option B → Incorrect because the Assertion is false.
Option C → Incorrect because both statements are false.
Option D → Incorrect because the Reason is also false.

🎯 Strategy

Used

Elimination

Application:

Recall the NCERT explanation of the labour demand curve.

Final Logic:

Higher Wage → Less Labour Demanded

🧠 Memory Trick

Higher Wage → Less Labour

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Labour Demand Curve and Diminishing MPL

9 Because the firm under consideration believes it cannot single-handedly influence the price of the commodity, it is operating as a:

A Monopolist

B Perfectly competitive firm

C Oligopolist

D Monopsonist

💡 Short Explanation

A perfectly competitive firm is a price taker. It accepts the market price. It cannot influence the commodity price.

✅ Correct Answer Explanation

A firm that believes it cannot influence the market price is known as a price taker. This is the defining characteristic of a perfectly competitive firm. Under perfect competition: MR = Price The firm accepts the market price and adjusts only its output. Therefore, Option B is correct.

❓ Why Other Options Are Incorrect

Option A → Incorrect because a monopolist has market power and can influence price.
Option C → Incorrect because firms in an oligopoly generally possess some degree of market power.
Option D → Incorrect because a monopsonist is a single buyer in an input market, not a price-taking seller in the product market.

🎯 Strategy

Used

Odd One Out

Application:

Identify the market structure where firms are price takers.

Final Logic:

Only a perfectly competitive firm cannot influence the market price.

🧠 Memory Trick

Perfect Competition = Price Taker

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Perfect Competition and Price Taking

10 Due to the fact that Marginal Revenue (MR) equals Price for a perfectly competitive firm, the Marginal Revenue Product of Labour (MRPL) is directly equal to:

A Marginal Cost

B Average Product

C Value of Marginal Product of Labour (VMPL)

D Total Revenue

💡 Short Explanation

Under perfect competition, MR = Price. MRPL = MR × MPL. VMPL = Price × MPL.

✅ Correct Answer Explanation

The formulas are: MRPL = MR × MPL and VMPL = Price × MPL Under perfect competition: MR = Price Therefore, MRPL = Price × MPL = VMPL Hence, MRPL is equal to VMPL. Therefore, Option C is correct.

❓ Why Other Options Are Incorrect

Option A → Incorrect because MRPL is unrelated to marginal cost.
Option B → Incorrect because average product is a different productivity measure.
Option D → Incorrect because total revenue measures the firm's total earnings, not the benefit from hiring one more worker.

🎯 Strategy

Used

Substitution

Application:

Substitute MR = Price into the MRPL formula.

Final Logic:

MRPL = MR × MPL = Price × MPL = VMPL

🧠 Memory Trick

MR = Price ⇒ MRPL = VMPL

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Relationship between MRPL and VMPL

11 In the context of a firm's hiring decision, the Marginal Revenue Product of Labour represents the firm's:

A Total variable cost curve.

B Direct supply curve for labour.

C Marginal cost of production constraint.

D Additional benefit gained from hiring an extra unit of labour.

💡 Short Explanation

MRPL measures the extra revenue generated by one more worker. It is the marginal benefit of employing labour. Firms compare MRPL with the wage rate while hiring.

✅ Correct Answer Explanation

The Marginal Revenue Product of Labour (MRPL) is the additional revenue earned by employing one extra unit of labour. Its formula is: MRPL = MR × MPL where: MR = Marginal Revenue MPL = Marginal Product of Labour A profit-maximizing firm hires labour until: W = MRPL Thus, MRPL represents the additional benefit obtained from hiring one more worker. Therefore, Option D is correct.

❓ Why Other Options Are Incorrect

Option A → Incorrect because MRPL is a revenue concept, not a cost curve.
Option B → Incorrect because MRPL is not the labour supply curve.
Option C → Incorrect because MRPL measures benefit rather than production cost.

🎯 Strategy

Used

Odd One Out

Application:

Identify the option that represents the benefit of hiring labour.

Final Logic:

MRPL measures the additional benefit from employing one more worker.

🧠 Memory Trick

MRPL = Benefit of Hiring

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Marginal Revenue Product of Labour (MRPL)

12 If a firm's Marginal Revenue (MR) is Rs 10 and the Marginal Product of Labour (MPL) is 5 units, what is the calculated MRPL?

A Rs 50

B Rs 2

C Rs 15

D Rs 5

💡 Short Explanation

Use the MRPL formula. Multiply MR by MPL. Compute the numerical value.

✅ Correct Answer Explanation

The formula for Marginal Revenue Product of Labour is: MRPL = MR × MPL Given: MR = Rs 10 MPL = 5 units Therefore, MRPL = 10 × 5 = Rs 50 Hence, Option A is correct.

❓ Why Other Options Are Incorrect

Option B → Incorrect because MRPL is obtained by multiplication, not division.
Option C → Incorrect because addition is not used in the MRPL formula.
Option D → Incorrect because it ignores the multiplication by MR.

🎯 Strategy

Used

Substitution

Application:

Substitute the given values directly into the MRPL formula.

Final Logic:

MRPL = 10 × 5 = Rs 50

🧠 Memory Trick

MRPL = MR × MPL

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Formula of MRPL

13 Match the labour market variables with their correct descriptive components:

List I	List II
1. Wage Rate (w)	a. Extra cost of hiring labour
2. MRPL	b. MR × MPL
3. VMPL	c. Price × MPL
4. Marginal Revenue (MR)	d. Equal to Price in perfect competition

A 1-b, 2-a, 3-d, 4-c

B 1-a, 2-b, 3-c, 4-d

C 1-c, 2-d, 3-a, 4-b

D 1-d, 2-c, 3-b, 4-a

💡 Short Explanation

�� Wage is the marginal cost of hiring one more unit of labour. �� MRPL = MR × MPL. �� VMPL = Price × MPL. �� Under perfect competition, MR = Price.

✅ Correct Answer Explanation

The correct relationships are: Wage Rate (W) → Extra cost of hiring labour (a) MRPL → MR × MPL (b) VMPL → Price × MPL (c) Marginal Revenue (MR) → Equal to Price under perfect competition (d) Thus, the correct matching is: 1 → a 2 → b 3 → c 4 → d Hence, Option B is correct.

❓ Why Other Options Are Incorrect

Option A → Incorrect because the wage rate represents the marginal cost of hiring one more unit of labour, not MR × MPL.
Option C → Incorrect because the variables are incorrectly matched and do not represent their proper economic definitions.
Option D → Incorrect because MRPL and VMPL are assigned incorrectly. Under perfect competition, MRPL = VMPL, but they are distinct concepts and cannot be interchanged arbitrarily in the matching.

🎯 Strategy

Used

Option Grouping

Application:

Recall the definitions and formulas before matching.

Final Logic:

Only Option B correctly matches all four variables.

🧠 Memory Trick

MR → Price

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Wage, MRPL, VMPL and MR

14 Under what specific market condition is MRPL guaranteed to be equal to VMPL?

A When the firm operates as a pure monopoly.

B When the firm can freely set its own commodity price.

C When marginal revenue is exactly equal to the price of the commodity.

D When the prevailing wage rate drops to zero.

💡 Short Explanation

MRPL depends on marginal revenue. VMPL depends on price. They become equal when MR equals price.

✅ Correct Answer Explanation

The formulas are: MRPL = MR × MPL and VMPL = Price × MPL If: MR = Price then, MRPL = Price × MPL = VMPL This equality holds under perfect competition, where firms are price takers. Therefore, Option C is correct.

❓ Why Other Options Are Incorrect

Option A → Incorrect because in monopoly, MR<PMR < PMR<P, so MRPL is not equal to VMPL.
Option B → Incorrect because firms that set their own prices do not generally have MR=PMR = PMR=P.
Option D → Incorrect because the wage rate has no role in establishing the equality between MRPL and VMPL.

🎯 Strategy

Used

Substitution

Application:

Compare the formulas for MRPL and VMPL.

Final Logic:

MR = Price ⇒ MRPL = VMPL

🧠 Memory Trick

MR = Price ⇒ MRPL = VMPL

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Relationship between MRPL and VMPL

15 To arrive at the aggregate market demand curve from the individual firms' demand curves, we simply ________ the demand for labour by individual firms at different possible wages.

A subtract

B multiply

C divide

D add up

💡 Short Explanation

Market demand is the sum of individual firms' demand. Demands are aggregated horizontally. This produces the market labour demand curve.

✅ Correct Answer Explanation

The market demand curve for labour is obtained by adding up the labour demand curves of all individual firms. At each wage rate, the quantities of labour demanded by all firms are summed horizontally to obtain the aggregate market demand curve. Therefore, Option D is correct.

❓ Why Other Options Are Incorrect

Option A → Incorrect because market demand is not obtained by subtraction.
Option B → Incorrect because multiplying demands has no economic meaning.
Option C → Incorrect because division is not used in market aggregation.

🎯 Strategy

Used

Contextual/Tonal Matching

Application:

Recall how the market labour demand curve is derived from individual firms' demand curves.

Final Logic:

Market Labour Demand = Sum of Individual Firms' Labour Demand

🧠 Memory Trick

Market Demand = Add All Firms

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Market Demand Curve for Labour

16 Why does the profit-maximizing firm logically demand less labour at a higher wage?

A To increase MPL and perfectly maintain the w =VMPL equality.

B To aggressively decrease total market output.

C Because consumers proportionally demand fewer goods.

D Because the government strictly regulates hiring limits.

💡 Short Explanation

A higher wage raises the cost of hiring labour. The firm hires labour until w= VMPL. Due to diminishing MPL, employing fewer workers increases the MPL of the last worker.

✅ Correct Answer Explanation

A profit-maximizing firm employs labour until: W = VMPL where: VMPL = P × MPL If the wage rate increases, the firm must ensure that the value generated by the last worker also increases. Since the commodity price remains constant under perfect competition, VMPL = P × MPL a higher VMPL requires a higher MPL. According to the Law of Diminishing Marginal Product, a higher MPL can be achieved only by reducing the number of workers employed. Therefore, the firm demands less labour at a higher wage to restore the equilibrium condition: W = VMPL Hence, Option A is correct.

❓ Why Other Options Are Incorrect

Option B → Incorrect because reducing labour is intended to maximize profit, not deliberately reduce total market output.
Option C → Incorrect because the hiring decision is based on labour productivity and wages, not directly on proportional changes in consumer demand.
Option D → Incorrect because the analysis assumes a competitive market without government hiring restrictions.

🎯 Strategy

Used

Contextual/Tonal Matching

Application:

Use the firm's equilibrium condition W = VMPL together with the Law of Diminishing Marginal Product.

Final Logic:

Higher Wage → Higher Required VMPL → Fewer Workers Employed

🧠 Memory Trick

Wage ↑ → Labour ↓ → MPL ↑

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Reason for the Downward-Sloping Labour Demand Curve

17 Why does the market supply curve of labour remain upward sloping despite the individual labour supply curve bending backward at high wages?

A Government legislation explicitly mandates it.

B Higher wages attract many more new individuals to supply labour.

C Firms continuously demand more labour at all wage points.

D The working population continuously and rapidly increases.

💡 Short Explanation

Individual supply may bend backward. Higher wages attract new workers into the labour market. The aggregate market labour supply remains upward sloping.

✅ Correct Answer Explanation

Although an individual labour supply curve may bend backward at high wages because the income effect outweighs the substitution effect, the market labour supply curve behaves differently. As wages increase: More individuals are attracted to join the labour force. Many existing workers also increase their labour supply over a range of wages. Therefore, the total labour supplied in the market increases, causing the market labour supply curve to remain upward sloping. Hence, Option B is correct.

❓ Why Other Options Are Incorrect

Option A → Incorrect because the upward slope results from market behaviour, not government legislation.
Option C → Incorrect because labour demand is determined by firms and does not explain the shape of the market labour supply curve.
Option D → Incorrect because population growth is not the reason discussed in the NCERT analysis.

🎯 Strategy

Used

Elimination

Application:

Differentiate between the individual labour supply curve and the market labour supply curve.

Final Logic:

More Workers Enter the Market → Market Labour Supply Slopes Upward

🧠 Memory Trick

Many Workers → Market Supply ↑

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Market Labour Supply Curve

18 Arrange the progression of effects on an individual when the wage rate increases significantly:
1. At low wages, the opportunity cost of leisure increases.
2. The individual chooses to enjoy less leisure.
3. The individual works for longer hours.
4. At high wages, purchasing power increases substantially, causing a desire to spend more time on leisure, reducing labour supply.

A 4, 3, 2, 1

B 1, 4, 2, 3

C 1, 2, 3, 4

D 3, 1, 2, 4

💡 Short Explanation

Higher wages initially increase the opportunity cost of leisure. Individuals substitute leisure with work. At very high wages, the income effect dominates and labour supply falls.

✅ Correct Answer Explanation

The correct sequence is: 1. At lower wage levels, the opportunity cost of leisure increases. 2. Individuals choose to enjoy less leisure. 3. They work for longer hours (substitution effect). 4. At very high wages, the income effect dominates, encouraging individuals to enjoy more leisure and supply less labour, giving rise to the backward-bending labour supply curve. Thus, the correct order is: 1 → 2 → 3 → 4 Hence, Option C is correct.

❓ Why Other Options Are Incorrect

Option A → Incorrect because it begins with the final stage rather than the initial substitution effect.
Option B → Incorrect because the income effect occurs after the substitution effect.
Option D → Incorrect because individuals first recognize the higher opportunity cost of leisure before changing their working hours.

🎯 Strategy

Used

Contextual/Tonal Matching

Application:

Arrange the events according to the chronological sequence of substitution and income effects.

Final Logic:

Opportunity Cost ↑ → Less Leisure → More Work → Income Effect Dominates.

🧠 Memory Trick

Substitution First → Income Later

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Backward-Bending Labour Supply Curve

📄 Passage

"The firm being a profit maximiser will always employ labour upto the point where the extra cost she incurs for employing the last unit of labour is equal to the additional benefit she earns from that unit. The extra cost of hiring one more unit of labour is the wage rate (w). The extra output produced by one more unit of labour is its marginal product (MPL) and by selling each extra unit of output, the additional earning of the firm is the marginal revenue (MR)."

Based directly on the passage, the firm will completely stop hiring additional labour when:

A MR = MPL

B w > MRPL

C w < MRPL

D w = MRPL

💡 Short Explanation

Firms compare the wage with MRPL. Hiring continues while MRPL exceeds the wage. Equilibrium is reached when wage equals MRPL.

✅ Correct Answer Explanation

The passage states that a profit-maximizing firm hires labour until the extra cost equals the additional benefit. The additional cost is: W = Wage Rate The additional benefit is: MRPL = MR × MPL Therefore, equilibrium employment occurs when: W = MRPL At this point: Hiring one more worker adds exactly as much revenue as it costs. Hiring another worker would not increase profit. Hence, Option D is correct.

❓ Why Other Options Are Incorrect

Option A → Incorrect because MR and MPL measure different concepts and cannot be equated directly.
Option B → Incorrect because if W > MRPL, the firm should reduce employment.
Option C → Incorrect because if W < MRPL, hiring another worker would increase profit.

🎯 Strategy

Used

Substitution

Application:

Use the firm's profit-maximizing hiring condition given in the passage.

Final Logic:

W = MRPL marks the equilibrium level of employment.

🧠 Memory Trick

Hire Until Wage = Benefit

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Profit-Maximizing Employment Condition

📄 Passage

According to the text in the passage, what specific term is used to describe the "extra cost of hiring one more unit of labour"?

A Wage rate

B Marginal cost

C Total cost

D Opportunity cost

💡 Short Explanation

The passage directly identifies the extra hiring cost. Wage is the firm's marginal labour cost. It is compared with MRPL in the hiring decision.

✅ Correct Answer Explanation

The passage explicitly states: "The extra cost of hiring one more unit of labour is the wage rate (W)." Therefore, the wage rate is the firm's additional cost of employing one more worker. The firm compares this cost with the additional benefit: MRPL and hires labour until: W = MRPL Thus, Option A is correct.

❓ Why Other Options Are Incorrect

Option B → Incorrect because the passage specifically identifies the wage rate, not the general concept of marginal cost.
Option C → Incorrect because total cost includes all production costs, not just the cost of hiring one additional worker.
Option D → Incorrect because opportunity cost is not the term used in the passage.

🎯 Strategy

Used

Contextual/Tonal Matching

Application:

Identify the exact definition given in the passage.

Final Logic:

The passage directly states that the extra cost of hiring one more unit of labour is the wage rate.

🧠 Memory Trick

Extra Hire = Extra Wage

📚 Class XII – Introductory Microeconomics – Chapter: Market Equilibrium – Topic: Wage Rate as the Marginal Cost of Labour

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