1) Suppose some firms exit an industry characterized by monopolistic competition. We
would expect the demand curve of a firm already in the industry to:
A.Shift to the left
B.Shift to the right
C.Become less elastic
D.Remain the same since entering firms serve other customers in the market
2) The larger the Herfindahl index, the:
A.Less the degree of import competition in an industry
B.Greater the degree of import competition in an industry
C.Less the degree of market power in an industry
D.Greater the degree of market power in an industry
3) Answer the question on the basis of the following table showing market shares of
firms in hypothetical industries. Assume these are distinct industries with no
buyer-seller relationships or competition among them.
Refer to the table. The Herfindahl index for Cappa is:
A.2,500
B.100
C.100,000
D.5,000
4) Use the below graph to show what happens to total revenue when: (a) price falls
from P1 to P2; (b) price rises from P3 to P2. Explain your answer in terms of areas of
total revenue gained or lost using the alphabetical letters representing different areas on
the graph. (c) Is demand elastic or inelastic? How do you know?