Suppose there was a 4 % decrease in the | Class 12 Micro Economics Chapter Theory of Consumer Behaviour, Theory of Consumer Behaviour 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.

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?

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?

If a consumer has monotonic preferences, can she be indifferent between the
bundles (10, 8) and (8, 6)?

At what level of price do the firms in a perfectly competitive market supply when free entry and exit is allowed in the market? How is the equilibrium quantity determined in such a market?

Compare the effect of shift in the demand curve on the equilibrium when the number of firms in the market is fixed with the situation when entry-exit is permitted.

Suppose the price elasticity of demand for a good is – 0.2. If there is a 5 % increase in the price of the good, by what percentage will the demand for the good go down?

Why is the short-run marginal cost curve 'U'-shaped? 

What do you understand by normative economic analysis?

How does an increase in the number of firms in a market affect the market supply curve?

What is budget line?

Why is the total revenue curve of a price-taking firm an upward-sloping straight line? Why does the curve pass through the origin?

The following table shows the total cost schedule of a competitive firm. It is given that the price of the good is Rs 10. Calculate the profit at each output level. Find the profit maximising level of output.