Question 42

Characteristics of monopolistic competition include declining profits for incumbent firms when new entrants enter the market and increased product variety leading to reduced demand for existing firms.

A) Profit for incumbent firms declines when new firms enter the market.

This statement accurately reflects a key characteristic of monopolistic competition. When new firms enter the market, they increase competition, which typically drives down prices and reduces the profit margins of existing firms. This dynamic illustrates the market's response to increased supply and highlights the impact of entry on incumbent profitability.

B) In the long run, price will exceed average total cost, causing all firms to earn a profit.

This option is incorrect in the context of monopolistic competition. In the long run, firms in monopolistic competition typically earn zero economic profit as prices adjust to equal average total costs. This means that while firms may earn a profit in the short run, in the long run, the entry of new firms leads to a situation where price equals average total cost.

C) Firms produce at the efficient scale, where average total cost is minimized.

This statement is also incorrect. In monopolistic competition, firms do not operate at the efficient scale. Instead, they operate with excess capacity, meaning they produce less than the output level that minimizes average total costs. This results in higher average costs compared to perfectly competitive markets.

D) Entry of new firms increases the number of products and reduces demand for existing firms.

This statement is correct and highlights another characteristic of monopolistic competition. As new firms enter the market, they introduce differentiated products, which increases the variety available to consumers. This increased product variety can lead to a reduction in demand for existing firms' products, as consumers may switch to the new alternatives.

E) When firms leave the market, the demand curve for the remaining firms shifts to the left.

This statement is incorrect. When firms exit the market, the remaining firms typically experience an increase in demand for their products, as there are fewer competitors. Consequently, the demand curve for the remaining firms would shift to the right, not the left.

F) Price equals marginal cost, resulting in zero profit from additional sold units.

This statement is incorrect in the context of monopolistic competition. Unlike perfect competition, firms in monopolistic competition set prices above marginal costs due to product differentiation. Therefore, firms do not achieve zero profit from selling additional units since price exceeds marginal cost.

Conclusion

In summary, the correct characteristics of monopolistic competition are that profit for incumbent firms declines with the entry of new firms and that the entry of new firms increases product variety while reducing demand for existing firms. The other options either misrepresent the dynamics of monopolistic competition or incorrectly describe market behavior. These characteristics are crucial for understanding how monopolistic competition functions in an economic context.