A firm earns a revenue of Rs 50 when the | Class 12 Micro Economics Chapter The Theory of the Firm under Perfect Competition, The Theory of the Firm under Perfect Competition NCERT Solutions

The market price of a good changes from Rs 5 to Rs 20. As a result, the quantity supplied by a firm increases by 15 units. The price elasticity of the firm’s supply curve is 0.5. Find the initial and final output levels of the firm.

How does the imposition of a unit tax affect the supply curve of a firm?

What is the supply curve of a firm in the long run?

Distinguish between a centrally planned economy and a market economy.

A consumer wants to consume two goods. The prices of the two goods are Rs 4
and Rs 5 respectively. The consumer’s income is Rs 20.
(i) Write down the equation of the budget line.
(ii) How much of good 1 can the consumer consume if she spends her entire
income on that good?
(iii) How much of good 2 can she consume if she spends her entire income on
that good?
(iv) What is the slope of the budget line?
Questions 5, 6 and 7 are related to question 4.

How will a change in the price of coffee affect the equilibrium price of tea? Explain the effect on equilibrium quantity also through a diagram. 

Suppose your friend is indifferent to the bundles (5, 6) and (6, 6). Are the preferences of your friend monotonic?

What is the total product of input?

Consider the demand curve D (p) = 10 – 3p. What is the elasticity at price 53?

List the three different ways in which oligopoly firms may have.

What do you mean by ‘monotonic preferences’?

In what respect do the supply and demand curves in the labor market differ from those in the goods market?

Explain market equilibrium.

What will happen if the price prevailing in the market is?

i. Above the equilibrium price

Ii. Below the equilibrium price

The market demand curve for a commodity and the total cost for a monopoly firm producing the commodity are given in the schedules below. 

Use the information given to calculate the following:

(a) The MIR and MC schedules

(b) The quantities for which MIR and MC are equal

(c) The equilibrium quantity of output and the equilibrium price of the commodity

(d) The total revenue, total cost and total profit in the equilibrium

Can there be a positive level of output that a profit-maximising firm produces in a competitive market at which market price is not equal to marginal cost? Give an explanation.

What is budget line?

How does the budget line change if the consumer’s income increases to Rs 40 but the prices remain unchanged?

Explain why the budget line is downward sloping.

What are the total fixed cost, total variable cost and total cost of a firm? How are they related?