11.
The point of inflexion refers to that point on the total physical product curve from where onwards the . . . . . . . . of the total physical product changes.

15.
Match the following.
List-I List-II
a. Indifference curve 1. Slopes downward to the right
b. Demand curve 2. P = AR = MR = d
c. Perfect competition 3. Oligopoly
d. Price leadership 4. Convex to the origin

16.
A firm sells its product at a price lower than the opportunity cost of the inputs used to produce it. Which is true?

17.
By total consumer surplus, economists mean (in P-Q space)

18.
How is the revenue marginal productivity calculated under marginal productivity theory?

19.
Match the following.
List-I List-II
a. Economic profit 1. Total revenue explicit cost
b. Accounting profit 2. Buyers and sellers exchanging
c. Collusion/Cartel 3. Total revenue - Total cost
d. Market 4. Oligopoly