The altitudes of he:),venly bodies appear to be greater than they actually are. This is due to
| A. | Vertical motion of these heavenly bodies |
| B. | Motions of the earth |
| C. | Atmospheric refraction |
| D. | These are visible because of light of the sun reflected from their surface |
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Option: C Explanation : Click on Discuss to view users comments. |
The tenn 'meteor' is applied to ari interplanetary body
| A. | After it enters the atmosphere of the earth |
| B. | After it enters the earth's atmosphere and explodes in mid air as a ball of fire |
| C. | After it enters the earth's atmosphere and lands on the surface of the earth without exploding in mid-air |
| D. | Before it enters the earth's atmosphere |
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Option: B Explanation : Click on Discuss to view users comments. |
Among the planets of the solar system, the one which has the longest-period of rotation is
| A. | Venus |
| B. | Mars |
| C. | Saturn |
| D. | Pluto |
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Option: A Explanation : Click on Discuss to view users comments. |
