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प्रश्न
Name two effects produced by the atmospheric refraction.
उत्तर
(a) The twinkling of stars is produced by atmospheric refraction.
(b) Advanced sunrise and delayed sunset are also effects produced by atmospheric refraction.
APPEARS IN
संबंधित प्रश्न
Explain why the planets do not twinkle.
Atmospheric refraction causes advance sunrise and delayed sunset. By how much time is:
sunrise advanced?
Fill in the following blank with suitable word:
We can see the sun about ................ minutes before the actual sunrise and about ................ minutes after the actual sunset because of atmospheric ................
Why do stars seem higher than they actually are? Illustrate your answer with the help of a diagram.
The twinkling of stars is due to atmospheric:
(a) reflection of light
(b) dispersion of light
(c) interference of light
(d) refraction of light
The stars twinkle but the planets do not twinkle at night because:
(a) the stars are small but the planets are large
(b) the stars are very large but planets are small
(c) the stars are much nearer but planets are far off
(d) the stars are far off but planets are nearer to earth
Why does the sky appear blue on a clear day?
The stars appear higher from horizon than they actually are. Explain why it is so.
Explain why the planets do not twinkle but the stars twinkle.
Assertion: Sky appears blue in the day time.
Reason: White light is composed of seven colours.
