Suppose the price at which the equilibrium is attained in exercise 5 is above the minimum average cost of the firms constituting the market. Now if we allow for free entry and exit of firms, how will the market price adjust to it?
In the equilibrium price (Rs 8) in the above figure (of Q-5) is above the minimum of average cost, then it implies that the firm is earing supernormal profits. This situation will attract new firms in the market. As the new firms entre, the industry supply of output will also increases. New firms will continue to enter the industry that will leads the price to fall until it becomes equal to the minimum of the average cost. Thus, the supernormal profits are wiped out and all the firms earn normal profits. When the free entry and exit of firms is allowed, the equilibrium is determined by the intersection of demand curve and the ‘P = min AC’ line.
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.
When do we say that there is an excess demand for a commodity in the market?
When do we say that there is an excess supply for a commodity in the market?
Explain through a diagram the effect of a rightward shift of both the demand and supply curves on equilibrium price and quantity.
Suppose the market determined rent for apartments is too high for common people to afford. If the government comes forward to help those seeking apartments on rent by imposing control on rent, what impact will it have on the market for apartments?
In what respect do the supply and demand curves in the labor market differ from those in the goods market?
Explain how price is determined in a perfectly competitive market with a fixed number of firms.
Explain market equilibrium.
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?
Suppose the demand and supply curves of salt are given by:
(a) Find the equilibrium price and quantity.
(b) Now, suppose that the price of an input that used to produce salt has increased so, that the new supply curve is qs = 400 + 3p
How does the equilibrium price and quantity change? Does the change conform to your expectation?
(a) Suppose the government has imposed at ax of Rs 3 per unit of sale on salt. How does it affect the equilibrium rice quantity?
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?
Discuss the central problems of an economy.
What are the characteristics of a perfectly competitive market?
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:
Quantity |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
Marginal Revenue |
10 |
6 |
2 |
2 |
2 |
0 |
0 |
0 |
- |
What do you mean by the production possibilities of an economy?
How are the total revenue of a firm, market price, and the quantity sold by the firm related to each other?
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.
The following table gives the total product schedule of labour. Find the corresponding average product and marginal product schedules of labour.
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.
Find out the maximum possible output for a firm with zero units of L and 10 units of K when its production function is Q = 5L = 2K.
Explain why the budget line is downward sloping.
Suppose a consumer’s preferences are monotonic. What can you say about her preference ranking over the bundles (10, 10), (10, 9) and (9, 9)?
What are the average fixed cost, average variable cost and average cost of a firm? How are they related?
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.
What is the total product of input?