Explain the concepts of the short run and the long run.
Short Run: In short run, a firm cannot change all the inputs, which means that the output can be increased (decreased) only by employing more (less) of the variable factor (labour). It is generally assumed that in short run a firm does not have sufficient or enough time to vary its fixed factors such as, installing a new machine, etc. Hence, the output levels vary only because of varying employment levels of the variable factor. Algebraically, the short run production function is expressed as
Qx= f (L,K)
Where,
Qx = units of output x produced
L = labour input
K = constant units of capital
Long Run: In long run, a firm can change all its inputs, which means that the output can be increased (decreased) by employing more (less) of both the inputs − variable and fixed factors. In the long run, all inputs (including capital) are variable and can be changed according to the required levels of output. The law that explains this long run concept is called return to scale. The long run production function is expressed as
Qx= f (L,K)
Both L and K are variable and can be varied.
What is the total product of input?
Let the production function of a firm be Q=5L1/2K1/2Q=5L1/2K1/2 Find out the maximum possible output that the firm can produce with 100 units of LL and 100 units of KK.
Why does the SMC curve cut the AVC curve at the minimum point of the AVC curve?
When does a production function satisfy decreasing returns to scale?
What do the long-run marginal cost and the average cost curves look like?
Explain the relationship between the marginal products and the total product of an input.
What does the average fixed cost curve look like? Why does it look so?
Why is the short-run marginal cost curve 'U'-shaped?
Explain the concept of a production function
What is the law of variable proportions?
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 are the characteristics of a perfectly competitive market?
What do you mean by the budget set of a consumer?
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 |
- |
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?
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 a market where there are just two consumers and suppose their demands for the good are given as follows:
Calculate the market demand for the good.
p |
d1 |
d2 |
1 |
9 |
24 |
2 |
8 |
20 |
3 |
7 |
18 |
4 |
6 |
16 |
5 |
5 |
14 |
6 |
4 |
12 |
If a consumer has monotonic preferences, can she be indifferent between the
bundles (10, 8) and (8, 6)?
What do you mean by substitutes? Give examples of two goods which are substitutes of each other.
Suppose a consumer can afford to buy 6 units of good 1 and 8 units of good 2
if she spends her entire income. The prices of the two goods are Rs 6 and Rs 8
respectively. How much is the consumer’s income?
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. How will the expenditure on the good be affected if there is a 10 % increase in the price of the good?
Consider the demand curve D (p) = 10 – 3p. What is the elasticity at price 53?
Explain why the budget line is downward sloping.
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?
Comment on the shape of MR curve in case when TR curve is a
(a) Positively sloped straight line
(b) Horizontal straight line