Question 1

Which of the following best describes the key difference between a perfectly competitive firm and a monopoly in terms of pricing power?

Accepted Answer

A perfectly competitive firm is a price taker, while a monopoly is a price maker.

Question 2

Suppose a monopolist faces a linear demand curve given by $$p = 10 - Q. $$What is the equation for the monopolist's marginal revenue (MR) curve?

Accepted Answer

$$MR = 10 - 2Q$$

Question 3

A monopolist maximizes profit by producing the quantity where:

Accepted Answer

$$MR = MC$$

Question 4

If the elasticity of demand at the profit-maximizing output for a monopoly is $$\varepsilon = -2$$, what is the relationship between marginal revenue (MR) and price (P)?

Accepted Answer

$$MR = 0.5P$$

Question 5

Which of the following is NOT a typical barrier to entry that allows monopolies to exist?

Accepted Answer

Perfectly elastic demand for the product

Question 6

The deadweight loss from monopoly arises because:

Accepted Answer

The monopolist produces less than the socially optimal quantity.

Question 7

The Lerner Index of monopoly power is given by:

Accepted Answer

$$L = \frac{P - MC}{P}$$

Question 8

A natural monopoly is most likely to arise in which of the following industries?

Accepted Answer

Water supply utilities

Question 9

If a government regulator sets a price ceiling for a natural monopoly at the level where $$P = MC$$, what is a likely outcome?

Accepted Answer

The monopoly will incur losses and may exit the market.

Question 10

Which of the following equations correctly expresses the relationship between marginal revenue, price, and elasticity of demand for a monopoly?

Accepted Answer

$$MR = P \left[ 1 - \frac{1}{\varepsilon} \right]$$

Question 11

Which of the following is a real-world example of a government-created monopoly?

Accepted Answer

A pharmaceutical company with a patent on a new drug

Question 12

If a monopoly faces the demand curve $$P = 20 - 2Q$$ and has a constant marginal cost of $$MC = 4$$, what is the profit-maximizing quantity?

Accepted Answer

$$Q = 6$$

Question 13

Which of the following best explains why the marginal revenue curve for a monopoly lies below its demand curve?

Accepted Answer

Because the monopolist must lower the price on all units sold to sell an additional unit.

Question 14

Which of the following is NOT a government response to monopoly power?

Accepted Answer

Granting exclusive rights to a single firm

Question 15

If a monopoly is regulated to set price equal to average total cost ($$P = ATC$$), what is the likely outcome?

Accepted Answer

The monopoly will earn zero economic profit.

Question 16

Which of the following statements about deadweight loss (DWL) in monopoly is correct?

Accepted Answer

DWL is the result of the monopolist producing less than the competitive equilibrium quantity.

Question 17

Which of the following best describes the effect of elasticity of demand on a monopolist’s ability to mark up price over marginal cost?

Accepted Answer

The less elastic the demand, the greater the markup.

Question 18

If a monopoly’s average total cost (ATC) at the profit-maximizing output is less than the price it charges, what can we conclude?

Accepted Answer

The monopoly is earning positive economic profit.

Question 19

Which of the following is true about the relationship between marginal revenue (MR) and price (P) for a monopoly?

Accepted Answer

$$MR \u003c P$$

Question 20

A monopoly faces the demand curve $$P = 12 - Q$$ and has marginal cost $$MC = 4. $$What price will the monopoly charge at the profit-maximizing output?

Accepted Answer

$$P = 8$$

Monopoly: Production, Pricing, and Welfare in Microeconomics

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