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Question
Differentiate between a change in quantity demanded and a change in demand.
Solution
| Change in Quantity Demanded | Change in Demand |
| Change in quantity demanded refers to increase or decrease in quantity demanded for a commodity in response to decrease or increase in own price, other things remaining constant. | Change in demand refers to increase or decrease in demand for a commodity in response to change in other determinants of demand other than the price of the same commodity. |
| The consumer moves downward or upward along the same demand curve. | The demand curve shifts either rightward or leftward. |
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Match the following:
| Column I | Column II |
| A. Extension of demand. | (i) A larger quantity is demanded at the same price. |
| B. Contraction of demand. | (ii) A smaller quantity is demanded at the same price. |
| C. Increase in demand. | (iii) Fall in quantity demanded due to the rise in its price. |
| D. Decrease in demand | (iv) Rise in the quantity demanded of a commodity as a result of fall in the price. |
What is increase in demand?
What is decrease in demand?
The following table shows a change in the demand. Read the table carefully and answer the question that follows:
| Case | Price (₹) | Quantity (kg) |
| I | 10 | 20 |
| 10 | 10 | |
| II | 10 | 20 |
| 5 | 20 |
What type of change is it - decrease in demand or contraction in demand? Give a reason.
Explain the diagram given alongside.
The following table shows a change in the demand. Read the table carefully and answer the question that follows:
| Case I | Case II | ||
| Price (₹) | Quantity | Price (₹) | Quantity |
| 10 | 20 | 10 | 20 |
| 10 | 10 | 5 | 20 |
What type of change is it, decrease in demand or contraction in demand? Give a reason.
