Price determination: perfect competition, monopolistic competition, oligopoly, monopoly, price discrimination - Question Bank

1. Which of the following is a key characteristic of oligopoly that distinguishes it from monopolistic competition?
A) Product differentiation
B) Large number of firms
C) Significant barriers to entry
D) Free entry and exit
2. In perfect competition, the industry demand curve is:
A) Perfectly elastic
B) Downward sloping
C) Perfectly inelastic
D) Upward sloping
3. If marginal cost is constant, a monopolist practicing third-degree price discrimination will charge:
A) The same price in all markets.
B) A higher price in the market with more elastic demand.
C) A higher price in the market with less elastic demand.
D) A price equal to marginal cost.
4. Which market structure is most likely to lead to both productive and allocative inefficiency?
A) Perfect Competition
B) Monopoly
C) Monopolistic Competition
D) Oligopoly
5. A situation where firms in an oligopoly compete aggressively on price is known as:
A) Price leadership
B) Collusion
C) Price war
D) Tacit cooperation
6. In the long-run equilibrium of monopolistic competition, firms operate:
A) At the minimum point of their ATC curve.
B) To the left of the minimum point of their ATC curve.
C) To the right of the minimum point of their ATC curve.
D) Where MC = P.
7. Which of the following is NOT a condition required for price discrimination?
A) The seller must have some degree of market power.
B) The seller must be able to identify and separate different buyer groups.
C) The price elasticity of demand must be the same across all groups.
D) The seller must be able to prevent or limit resale between groups.
8. The demand curve for a firm in monopolistic competition is:
A) Perfectly elastic
B) Perfectly inelastic
C) Downward sloping and more elastic than a monopoly's
D) Downward sloping and less elastic than a monopoly's
9. If a monopolist can perfectly price discriminate (first-degree price discrimination), it will produce:
A) The same output as a perfectly competitive industry.
B) Less output than a perfectly competitive industry.
C) More output than a perfectly competitive industry.
D) Zero output.
10. Which market structure is characterized by 'few dominant firms'?
A) Monopoly
B) Oligopoly
C) Monopolistic Competition
D) Perfect Competition
11. In perfect competition, the firm's supply curve is the:
A) Marginal cost curve above AVC.
B) Average total cost curve.
C) Marginal revenue curve.
D) Demand curve.
12. Price leadership in an oligopoly occurs when:
A) All firms agree to set the same price.
B) One dominant firm sets the price and others follow.
C) Firms engage in aggressive price cutting.
D) A government agency sets the price.
13. Which of the following is an example of product differentiation in monopolistic competition?
A) A farmer selling wheat in a large market.
B) A software company offering slightly different versions of its operating system.
C) An electric company providing power to a city.
D) A stock exchange listing identical shares.
14. In the short run, a monopolist will continue to produce as long as:
A) Price is greater than Average Total Cost.
B) Marginal Revenue is positive.
C) Price is greater than or equal to Average Variable Cost.
D) Total Revenue exceeds Total Cost.
15. A firm that can successfully price discriminate must have:
A) A perfectly elastic demand curve.
B) Significant market power and the ability to prevent resale.
C) A homogeneous product and no advertising.
D) A large number of competitors.
16. The Lerner Index, a measure of market power, is calculated as (P - MC) / P. It is typically highest for firms operating under:
A) Perfect Competition
B) Monopolistic Competition
C) Oligopoly
D) Monopoly
17. Which market structure is characterized by strategic decision-making where each firm's actions depend on the anticipated actions of its rivals?
A) Monopoly
B) Perfect Competition
C) Monopolistic Competition
D) Oligopoly
18. In monopolistic competition, the long-run equilibrium is characterized by:
A) P = MC
B) P > MC
C) P = MR
D) P = minimum ATC
19. The shutdown point for a perfectly competitive firm in the short run occurs when the price is equal to:
A) Minimum Average Total Cost (ATC)
B) Minimum Average Variable Cost (AVC)
C) Marginal Cost (MC)
D) Average Fixed Cost (AFC)
20. If a firm can charge different prices to different customers for the same product, it is likely engaging in:
A) Product differentiation
B) Collusion
C) Price discrimination
D) Price leadership
21. Barriers to entry are typically highest in which market structure?
A) Perfect Competition
B) Monopolistic Competition
C) Oligopoly
D) Monopoly
22. A monopolist faces a downward-sloping demand curve, which means that to sell more units, the monopolist must:
A) Lower the price
B) Raise the price
C) Keep the price constant
D) Increase production costs
23. Which of the following is a characteristic of monopolistic competition but not perfect competition?
A) Large number of buyers and sellers
B) Free entry and exit
C) Product differentiation
D) Profit maximization at MR=MC
24. What is the primary goal of a cartel?
A) To maximize consumer welfare
B) To increase competition among members
C) To act like a single monopolist and maximize joint profits
D) To achieve productive efficiency
25. In the context of perfect competition, the industry supply curve is derived from:
A) The marginal revenue curves of individual firms.
B) The average total cost curves of individual firms.
C) The sum of the marginal cost curves of individual firms above their shutdown points.
D) The demand curves faced by individual firms.
26. A firm is practicing third-degree price discrimination if it:
A) Charges different prices based on quantity purchased.
B) Charges different prices to different groups of consumers (e.g., students, seniors).
C) Charges the same price to all consumers.
D) Charges different prices based on the time of purchase.
27. Which market structure offers the greatest potential for non-price competition (e.g., advertising, branding)?
A) Perfect Competition
B) Monopoly
C) Oligopoly
D) Monopolistic Competition
28. The condition P > MR for a monopolist implies that the monopolist:
A) Is a price taker
B) Faces a perfectly elastic demand curve
C) Has market power to set prices
D) Operates under perfect competition
29. In an oligopoly, firms may engage in price wars, which are characterized by:
A) Cooperative price setting
B) Frequent and substantial price cuts
C) Mutual agreement on price levels
D) Focus on product differentiation
30. A natural monopoly arises when:
A) A firm has a patent on a product.
B) A single firm can supply the entire market at a lower cost than two or more firms.
C) A government grants exclusive rights to a firm.
D) A firm has significant advertising prowess.
31. If a firm in monopolistic competition lowers its price, its competitors are likely to:
A) Raise their prices
B) Keep their prices unchanged
C) Match the price reduction
D) Exit the market
32. Which market structure has the lowest degree of market power for individual firms?
A) Monopoly
B) Oligopoly
C) Monopolistic Competition
D) Perfect Competition
33. In the long run, a perfectly competitive firm operates at the minimum point of its Average Total Cost (ATC) curve, reflecting:
A) Allocative efficiency
B) Productive efficiency
C) Market power
D) Price discrimination
34. Price discrimination is illegal under certain conditions, particularly when it:
A) Increases consumer surplus
B) Reduces overall market output
C) Creates a monopoly
D) Benefits smaller businesses disproportionately
35. Which of the following is a characteristic of a monopoly?
A) Easy entry for new firms
B) Perfect substitutes available
C) Control over supply and price
D) Price taker behavior
36. In monopolistic competition, the product is:
A) Homogeneous
B) Identical
C) Differentiated
D) Standardized
37. The 'kinked demand curve' model is often associated with which market structure, attempting to explain price rigidity?
A) Monopoly
B) Perfect Competition
C) Monopolistic Competition
D) Oligopoly
38. Which market structure results in the highest price and lowest output compared to others, assuming similar cost conditions?
A) Perfect Competition
B) Monopolistic Competition
C) Oligopoly
D) Monopoly
39. A cartel is a form of:
A) Perfect Competition
B) Monopolistic Competition
C) Monopoly
D) Collusion in Oligopoly
40. What is a characteristic feature of oligopolistic markets?
A) Absence of non-price competition
B) Significant barriers to entry
C) Product homogeneity is essential
D) Perfect information for all firms
41. In perfect competition, the long-run equilibrium occurs when firms earn:
A) Supernormal profits
B) Normal profits (Zero economic profit)
C) Economic losses
D) Negative economic profits
42. Which condition must be met for a firm to successfully practice price discrimination?
A) The firm must operate in a perfectly competitive market.
B) The markets for the product must be separable and have different price elasticities of demand.
C) The product must be a homogeneous good with no close substitutes.
D) The firm must have a downward-sloping marginal cost curve.
43. In monopolistic competition, firms earn supernormal profits in the short run but tend towards normal profits in the long run due to:
A) High barriers to entry
B) Homogeneous products
C) Free entry and exit of firms
D) Price leadership
44. A monopolist maximizes profit by producing at the output level where:
A) Marginal Revenue (MR) equals Price (P)
B) Marginal Cost (MC) equals Price (P)
C) Marginal Revenue (MR) equals Marginal Cost (MC)
D) Average Total Cost (ATC) is minimized
45. Under perfect competition, the demand curve faced by an individual firm is:
A) Downward sloping
B) Perfectly inelastic
C) Perfectly elastic
D) Upward sloping
46. Price discrimination is the practice of selling the same product at different prices to different buyers. This is typically possible for firms operating under which market structure?
A) Perfect Competition
B) Monopoly
C) Oligopoly
D) Monopolistic Competition
47. In an oligopoly market, the actions of one firm significantly impact the others. This is known as:
A) Product Differentiation
B) Collusion
C) Interdependence
D) Price Leadership
48. Which market structure features a large number of firms selling differentiated products?
A) Perfect Competition
B) Monopoly
C) Oligopoly
D) Monopolistic Competition
49. What is the defining characteristic of a monopoly market structure?
A) Many firms selling differentiated products
B) Few firms dominating the market
C) A single seller with no close substitutes
D) Identical products sold by numerous firms
50. In which market structure are there a large number of buyers and sellers trading a homogeneous product?
A) Monopolistic Competition
B) Oligopoly
C) Perfect Competition
D) Monopoly