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Student Self-test Questions
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1
In a competitive industry each buyer and seller:
A)is a price taker.
B)produce different products.
C)believes that can influence price.
D)prevents the entry of competitors.
2
For a competitive firm, its short run supply curve is ________ and its long run supply curve is __________.
A)SMC, LMC
B)SMC above SAVC, LMC above LAC
C)SMC below SAVC, LMC above LAC
D)SMC below SAVC, LMC below LAC
3
For perfect competition to work there must be:
A)many buyers and sellers.
B)a standard product.
C)free entry and exit.
D)perfect information.
E)all of the above.
4
If there are short run excess profits in a competitive industry, in the long run they will disappear because of new entrants.
A)True
B)False
5
A competitive firms demand curve is:
A)horizontal.
B)vertical.
C)downward sloping.
D)fairly elastic.
6
For a competitive firm, the price is its:
A)average cost.
B)total revenue.
C)marginal revenue.
D)total cost.
7
A competitive firm faces a __________ demand curve.
A)vertical
B)downward sloping
C)u-shaped
D)horizontal
8
Free entry and exit is crucial to maintain a monopolists dominant position.
A)True
B)False
9
A firm will shut down in the short-run if it fails to cover:
A)short-run variable cost
B)short-run total cost
C)short-run average cost
D)short-run marginal cost
10
The price below which the firm cuts its losses by making no output is known as the:
A)shutup price.
B)shutdown price.
C)breakup price.
D)breakdown price.
11
In a competitive industry in which firms are making supernormal profits prices will ____ as ____ firms enter the market.
A)fall, more
B)fall, less
C)rise, more
D)rise, less
12
The long-run marginal cost curve is flatter than the short-run marginal cost curve since the firm can adjust all ______ in the ________.
A)output, short-run
B)output, long-run
C)inputs, long-run
D)inputs, short-run
13
When economic profits are zero, normal profits are zero.
A)True
B)False
14
A competitive firm produces a level of output at which _________ .
A)price is greater than marginal cost.
B)price equals marginal cost.
C)price is less than marginal cost.
D)none of the above.
15
The supply rule of the profit maximising monopolist is different from that of a competitive firm.
A)True
B)False
16
Comparing a monopoly and a competitive firm, the monopolist will:
A)produce less at a lower price.
B)produce more at a lower price.
C)produce less at a higher price.
D)produce less at a lower price.
17
A natural monopoly has a declining ________ over a large range of output.
A)long run marginal cost
B)short run marginal cost
C)long run average cost
D)long run marginal cost
18
A discriminating monopolist will charge a higher price to groups with elastic demand.
A)True
B)False
19
Perfect price discrimination means that every customer:
A)buys the same amount.
B)pays the same price.
C)contributes the same revenue.
D)pays what she thinks the product is worth.
20
A monopoly may be self-perpetuating because profits may be used for:
A)research.
B)cost-saving.
C)technical advance.
D)all of the above.







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