61.
A horizontal supply curve parallel to the quantity axis implies that the elasticity of supply is

62.
When ______, we know that the firms are earning just normal profits.

63.
The economic analysis expects the consumer to behave in a manner which is

64.
Consumer surplus is highest in case of

65.
The vertical difference between TVC and TC is equal to

66.
The AR curve and industry demand curve are same in case of

67.
When the price of a substitute of X commodity falls, the demand for X

68.
The law of variable proportions come into being when

69.
_____ is an implicit cost of production

70.
Excess capacity is not found under