10) In a perfectly competitive market, the process of entry and exit will end when
(i)accounting profits are zero.
(ii)economic profits are zero.
(iii)price equals minimum marginal cost.
(iv)price equals minimum average total cost.
a.(i) and (ii) only
b.(ii) and (iii) only
c.(ii) and (iv) only
d.(i), (ii), (iii), and (iv)
11) If a firm operating in a competitive industry shuts down in the short run, it can
avoid paying
a.fixed costs.
b.variable costs.
c.total costs.
d.The firm must pay all its costs, even if it shuts down.
12) The DeBeers Company faces very little competition from other firms in the
wholesale diamond market. Why isn’t the price of the wholesale diamonds $10,000 per
carat?
a.because the government would not allow such a high price
b.because stockholders would not allow such a high price
c.because the company would sell so few copies that they would earn higher profits by
selling at a lower price
d.All of the above are correct.
13) Prices rise when the quantity of money rises rapidly is an example of a
a.negative economic statement.
b.positive economic statement.
c.normative economic statement.
d.statement that contradicts one of the basic principles of economics.
14) Figure 20-3