1) Marginal cost is equal to marginal revenue,average cost is equal to average revence,avrage and average cost is equal to marginal cost that is condition of______

1. 1.Long period equilibrium for a firm under monopoly
2. short period equilibrium for a firm under oligopoly
3. Long period equilibrium
4. Long period equilibrium for a firm under perfect competitions
5. Short period equilibrium for a firm under perfect competitions

2) Which of the following statements is correct?

1. One way the government can induce a monopolist to expand his output is by imposing a price celling that make the monopolist lower his price
2. MS=MR=AC=AR shows the equilibrium position of the competitive firm
3. One way the government can induce a monopolist to expand his output is by imposing a floor that make the monopolist raise his price
4. One way the government can induce a monopolist to expand his output is by imposing a specific tax on the monopolist out put 

3) In the case of monopolistic competition

4) . MC=MR and MR=AR means_______

5) Which off the following statements is not correct?

6) For a unitary elasticity of the demand curve,the amount spent by a consumer on a good_______

7) "The more nearly perfect a market is,the stronger is the tendency for the same price to be paid for the same thing at the same time in all parts of the market" is the definition of perfect competition by_______

8) The social costs are the sum of the private costs and_____

9) The marginal curve is above the average product curve when the average production is ___

10)  When the out put produced is maximum for the given level of inputs the firms achieve_____