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प्रश्न
Atmospheric refraction causes advance sunrise and delayed sunset. By how much time is:
sunset delayed?
उत्तर
Sunset is delayed by about two minutes.
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संबंधित प्रश्न
What is atmospheric refraction? Use this phenomenon to explain the following natural events:
Twinkling of stars
Draw diagrams to illustrate your answers.
The correct sequencing of angle of incidence, angle of emergence, angle of refraction and lateral displacement shown in the following diagram by digits 1, 2, 3 and 4 is:
(a) 2, 4, 1, 3
(b) 2, 1, 4, 3
(c) 1, 2, 4, 3
(d) 2, 1, 3, 4
The phenomenon that causes the twinkling of stars is refraction of light.
Name two effects produced by the atmospheric refraction.
Why do stars seem higher than they actually are? Illustrate your answer with the help of a diagram.
What is atmospheric refraction? What causes atmospheric refraction?
The stars appear higher in the sky than they actually are, due to:
(a) diffraction of light
(b) scattering of light
(c) refraction of light
(d) reflection of light
We know that light refracts (or bends) when it goes from one medium to another. Now, the atmosphere contains only air. Then how does light get refracted on passing through only air in the atmosphere?
The stars appear higher from horizon than they actually are. Explain why it is so.
Assertion: Sky appears blue in the day time.
Reason: White light is composed of seven colours.
