Class 12 Micro Economics - Chapter Market Equilibrium NCERT Solutions | A shift in demand curve has a larger eff
A shift in demand curve has a larger effect on price and smaller effect on quantity when the number of firms is fixed compared to the situation when free entry and exits is permitted. Explain.
The above figure depicts both the cases when the number of firms is fixed (in short run) and when the number of firms is not fixed (in long run). P = min AC represents the long run price line; D1D1 and D2D2 represents the demand in the short run and the long run respectively. The point E1 represents the initial equilibrium, where the demand and the supply intersect each other. Let us suppose that the demand curve shifts, assuming that the number of firms is fixed. Now, the new equilibrium will be at Es (as it is short run equilibrium), where the supply curve and the demand curve D2D2 intersect each other. The equilibrium price is Ps and equilibrium quantity is On the other hand,
under the assumption of free entry and exit, an increase in demand will shift the demand curve rightwards to D2D2 . The new equilibrium will be at E2 (as it is a long run equilibrium) with the equilibrium price P = min AC and equilibrium quantity qL Therefore, on comparing both the cases,b we find that when the firms are given the freedom of entry and exit, the equilibrium price remains the same. The price is lower than that of the short run equilibrium price (Ps ); whereas, the long run equilibrium quantity (qL ) is more than that of the short run equilibrium quantity (qs). Similarly, for the leftward demand shift, it can be found that the short run equilibrium price (Ps ) is lower than the long run equilibrium
price and the short run equilibrium quantity (qs ) in less than the long run equilibrium quantity (Lq)
More Questions From Class 12 Micro Economics - Chapter Market Equilibrium
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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.
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When do we say that there is an excess demand for a commodity in the market?
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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?
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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?
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How are equilibrium price and quantity affected when income of the consumers
a) Increase
b) Decrease
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Explain market equilibrium.
- Q:-
Explain through a diagram the effect of a rightward shift of both the demand and supply curves on equilibrium price and quantity.
- Q:-
Explain how price is determined in a perfectly competitive market with a fixed number of firms.
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How is the optimal amount of labor determined in a perfectly competitive market?
- Q:-
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?
Popular Questions of Class 12 Micro Economics
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(a) A positively sloped straight line passing through the origin?
(b) A horizontal line?
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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
-
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What do you mean by the production possibilities of an economy?
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How are the total revenue of a firm, market price, and the quantity sold by the firm related to each other?
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Recently Viewed Questions of Class 12 Micro Economics
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What is the reason for the long run equilibrium of a firm in monopolistic competition to be associated with zero profit?
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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.
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At the market price of Rs 10, a firm supplies 4 units of output. The market price increases to Rs 30. The price elasticity of the firm’s supply is 1.25. What quantity will the firm supply at the new price?
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What is the supply curve of a firm in the short run?
- Q:-
Consider a market with two firms. The following table shows the supply schedules of the two firms: the SS1 column gives the supply schedule of firm 1 and the SS2 column gives the supply schedule of firm 2. Compute the market supply schedule.
Price (Rs.) SS1 (units) SS2 (units) 0
1
2
3
4
5
60
0
0
1
2
3
40
0
0
1
2
3
4 - Q:-
There are three identical firms in a market. The following table shows the supply schedule of firm 1. Compute the market supply schedule.
Price (Rs.) SS1 (units) 0
1
2
3
4
5
6
7
80
0
2
4
6
8
10
12
14 - Q:-
Consider a market with two firms. In the following table, columns labelled as SS1 and SS2 give the supply schedules of firm 1 and firm 2 respectively. Compute the market supply schedule.
Price (Rs.) SS1 (kg) SS2 (kg) 0
1
2
3
4
5
6
7
80
0
0
1
2
3
4
5
60
0
0
0
0.5
1
1.5
2
2.5 - Q:-
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