728by90ad
Physics - Section 1 Multiple Questions and Answers.
Exercise Questions ::
Physics - Section 1
| 1. | 1. Radiocarbon is produced in the atmosphere as a result of |
| |
| A. | collision between fast neutrons and nitrogen nuclei present in the atmosphere |
| B. | action of ultraviolet light from the sun on atmospheric oxygen |
| C. | action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere |
| D. | lightning discharge in atmosphere |
|
|
Published by:Ifrah Hameed
| 2. | It is easier to roll a stone up a sloping road than to lift it vertical upwards because |
| |
| A. | work done in rolling is more than in lifting |
| B. | work done in lifting the stone is equal to rolling it |
| C. | work done in both is same but the rate of doing work is less in rolling |
| D. | work done in rolling a stone is less than in lifting it |
|
|
Published by:Ifrah Hameed
| 3. | The absorption of ink by blotting paper involves |
| |
| A. | viscosity of ink |
| B. | capillary action phenomenon |
| C. | diffusion of ink through the blotting |
| D. | siphon action |
|
|
Published by:Ifrah Hameed
| 4. | Siphon will fail to work if |
| |
| A. | the densities of the liquid in the two vessels are equal |
| B. | the level of the liquid in the two vessels are at the same height |
| C. | both its limbs are of unequal length |
| D. | the temperature of the liquids in the two vessels are the same |
|
|
Published by:Ifrah Hameed
| 5. | Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to |
| |
| A. | the heating effect of current alone |
| B. | hysteresis loss alone |
| C. | both the heating effect of current and hysteresis loss |
| D. | intense sunlight at noon |
|
|
Published by:Ifrah Hameed
»
