Q.Explain the market supply curve with help of a diagram.
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Start your 14-day free trial to unlock the full solution →The market supply curve is the horizontal summation of all individual firms' supply curves; it slopes upward, showing a direct relationship between price and quantity supplied.
In the theory of the firm under perfect competition (Karnataka 2nd PUC), supply means the quantity of a good that firms are willing to sell at various prices.
Individual supply curve: For a single firm, the supply curve shows how much it will supply at each price. It slopes upward because a higher price makes it worthwhile to produce more.
Market supply curve: The market supply curve shows the total quantity supplied by all firms together at each price. It is obtained by the horizontal summation of the supply curves of all individual firms — at each price we add up the quantities supplied by every firm.
Suppose there are two firms with supply curves S1 and S2. At a price P, if firm 1 supplies q1 and firm 2 supplies q2, then market supply = q1 + q2.
Diagram (described in words): Measure quantity supplied on the X-axis and price on the Y-axis. Each firm's supply curve (S1, S2) slopes upward. Adding the quantities horizontally at every price gives the market supply curve (S), which also slopes upward from left to right but is flatter (shows a larger quantity at each price).
Price
| S1 S2 S (market)
| / / / …
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