Class 12 Micro Economics - Chapter The Theory of the Firm under Perfect Competition NCERT Solutions | How does an increase in the number of fi

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.

A firm earns a revenue of Rs 50 when the market price of a good is Rs 10. The market price increases to Rs 15 and the firm now earns a revenue of Rs 150. What is the price elasticity of the firm’s supply curve?

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

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

What is the relation between market price and average revenue of a price-taking firm?

What is the relation between market price and marginal revenue of a price-taking firm?

How does an increase in the price of an input affect the supply curve of a firm?

Compute the total revenue, marginal revenue and average revenue schedules in the following table. Market price of each unit of the good is Rs 10.

Will a profit-maximising firm in a competitive market ever produce a positive level of output in the range where the marginal cost is falling? Give an explanation.

Will a profit-maximising firm in a competitive market produce a positive level of output in the short run if the market price is less than the minimum of AVC? Give an explanation.

Explain the concept of a production function

What would be the shape of the demand curve so that the total revenue curve is?

(a) A positively sloped straight line passing through the origin?

(b) A horizontal line?

Explain market equilibrium.

Discuss the central problems of an economy.

What do you mean by the budget set of a consumer?

What is the total product of input?

From the schedule provided below calculate the total revenue, demand curve and the price elasticity of demand:

When do we say that there is an excess demand for a commodity in the market?

What do you mean by the production possibilities of an economy?

What is budget line?

Consider the demand for a good. At price Rs 4, the demand for the good is 25 units. Suppose the price of the good increases to Rs 5, and as a result, the demand for the good falls to 20 units. Calculate the price elasticity.

If the price of a substitute Y of good X increases, what impact does it have on the equilibrium price and quantity of good X?

How are equilibrium price and quantity affected when income of the consumers

a) Increase

b) Decrease

What is the law of variable proportions? 

Suppose there are 20 consumers for a good and they have identical demand functions: 

d(p)=10–3pd(p)=10–3p for any price less than or equal to 103103 and d1(p)=0d1(p)=0 at any price greater than 103.

What is the value of the MR when the demand curve is elastic?

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

What do you mean by an ‘inferior good’? Give some examples

From the schedule provided below calculate the total revenue, demand curve and the price elasticity of demand:

When do we say that there is an excess supply for a commodity in the market?