Physics - Section 1 Multiple Questions and Answers.
Exercise Questions ::
Physics - Section 1
Published by:Ifrah Hameed
12. | Planets do not twinkle because |
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| A. | they emit light of a constant intensity |
| B. | their distance from the earth does not change with time |
| C. | they are very far away from the earth resulting in decrease in intensity of light |
| D. | they are nearer to earth and hence we receive a greater amount of light and, therefore minor variations in the intensity are not noticeable |
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Published by:Ifrah Hameed
13. | Metals are good conductors of electricity because |
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| A. | they contain free electrons |
| B. | the atoms are lightly packed |
| C. | they have high melting point |
| D. | All of the above |
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Published by:Ifrah Hameed
14. | . Let a thin capillary tube be replaced with another tube of insufficient length then, we find water |
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| A. | will overflow |
| B. | will not rise |
| C. | depressed |
| D. | change its meniscus |
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Published by:Ifrah Hameed
15. | Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension? |
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| A. | Pressure and Young's modules |
| B. | Planck's constant and Angular momentum |
| C. | Impulse and moment of force |
| D. | Force and rate of change of linear momentum |
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Published by:Ifrah Hameed
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