Economic slides for Change in Demand

2. Kinds of changes in demand
There are two kinds of changes in demand:
 Extension & Contraction of demand
 Rise & Fall of demand

3. Extension & Contraction
Extension and Contraction of demand because of
influence of change in price.
It is also called
movement along demand curve

4. Definitions
 Extension of demand
Other things remains the same, when
price of commodity decreases its quantity
demand increases is called extension of
demand.

5. Definitions
Contraction of demand
Other things remains the same, when
price of commodity increases its quantity
demand decreases is called contraction of
demand.

6. Rise and Fall
Rise and Fall of demand because of influence of
change in other factors.
It is also called
shift of demand curve

7. Definitions
Rise of demand.
When price of commodity remains constant,
but quantity demand of commodity increases
due to change in other factors is called rise
of demand.

8. Definitions
Fall of demand.
When price of commodity remains constant,
but quantity demand of commodity decreases
due to change in other factors is called rise
of demand.

9. Shifting factors of demand
 Change in fashion
 Change in weather
 Change in consumer`s income
 Change in trade circumstances

10. Changes in Supply
Kinds of changes in supply
There are two kinds of changes in supply:
 Extension & Contraction of supply
 Rise & Fall of supply

11. Extension & Contraction
Extension and Contraction of supply because of
influence of change in price.
It is also called
movement along supply curve

12. Definitions
 Extension of supply
Other things remains the same, when
price of commodity increases its quantity
supply also increases is called extension of
supply.

13. Definitions
Contraction of supply
Other things remains the same, when
price of commodity decreases its quantity
supply also decreases is called contraction of
supply.

14. Rise and Fall
Rise and Fall of supply because of influence of change
in other factors.
It is also called
shift of supply curve

15. Definitions
Rise of supply.
When price of commodity remains constant,
but quantity supply of commodity increases
due to change in other factors is called rise
of supply.

16. Definitions
Fall of supply.
When price of commodity remains constant,
but quantity supply of commodity decreases
due to change in other factors is called rise
of supply.

17. Shifting factors of supply
 Changes in technologies or techniques of production
 Government policies
 weather conditions
 Political conditions
 Changes in prices of other goods

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