English

Changes in Supply

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Changes in Supply :

When other factors change and price remains constant, it is known as changes in supply. There are two types of changes in supply :
1) Increase in supply :
Increase in supply refers to rise in the supply of a given commodity due to favourable changes in other factors such as fall in the price of inputs, fall in tax rates, technological upgradation etc., while price remains constant. The supply curve shifts to the right of the original supply curve. It is shown in figure below.



In the figure above, quantity supplied is shown on the X axis and price on the Y axis. Supply rises from OQ to OQ1 at the same price OP, resulting in an outward shift of the original supply curve to the right from SS to S1S1. It is known as Increase in supply.

2) Decrease in supply :
Decrease in supply refers to a fall in the supply of a given commodity due to unfavourable changes in other factors such as increase in the prices of inputs, increase in tax rate, outdated technology, strikes by worker, while price remains constant. The supply curve shifts to the left of the original supply curve. It is shown in the figure below.

In the figure above, quantity supplied is shown on the X axis and price on the Y axis. Supply fallsfrom OQ to OQ2  at the same price OP, resulting in an inward shift of the original supply curve to the left from SS to S2S2. It is known as Decrease in supply.

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