Identify and explain the conditions for Long-Run Equilibrium in a perfectly competitive market.
Answer :
In long run many firms enter
into the perfectly competitive market. As a result, the price level
fall in long run continuously until it reaches to LAC (Long run
Average Cost) curve. As in long run price becomes equal to LAC,
hence in long run the perfectly competitive firms earn zero
economic profit. In the above picture's diagram the long-run market
price is P. Firms in long run at price level of P earns zero
economic profit. Because in the above diagram for firms at long run
equilibrium P = MR = AR = LMC = LAC occurs.
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