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Earn 100

Why Planets do not twinkle?

Important Questions on Refraction of Light

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Science>Physics>Refraction of Light>Atmospheric Refraction
Rainbow is a phenomenon due to:
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Science>Physics>Refraction of Light>Atmospheric Refraction
Various optical processes are involved in the formation of a rainbow. Which of the following provides the correct order in time in which these processes occur?
 
HARD
Science>Physics>Refraction of Light>Atmospheric Refraction
Explain the formation of a rainbow.
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Science>Physics>Refraction of Light>Atmospheric Refraction
Which of the following statement is correct?
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Science>Physics>Refraction of Light>Atmospheric Refraction
Mention any four phenomena that can be observed due to atmospheric refraction of light on the earth.
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Science>Physics>Refraction of Light>Atmospheric Refraction
A ray of light passes from glass μ=32 to water μ=43. The value of critical angle will be:
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Science>Physics>Refraction of Light>Atmospheric Refraction
A setting sun appears to be at an altitude higher than it really is. This is because of
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Science>Physics>Refraction of Light>Atmospheric Refraction

When Mars is viewed through a telescope it does not appear to twinkle. Comment.

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Science>Physics>Refraction of Light>Atmospheric Refraction
Write the reason for twinkling of stars in the sky.
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Science>Physics>Refraction of Light>Atmospheric Refraction
State the reason for the sun is visible a little before the actual sunrise and a little after the actual sunset. 
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Science>Physics>Refraction of Light>Atmospheric Refraction
What do you mean by atmospheric refraction?
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Science>Physics>Refraction of Light>Atmospheric Refraction
Why do stars twinkle?
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Science>Physics>Refraction of Light>Atmospheric Refraction
Why do stars twinkle ? Explain.
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Science>Physics>Refraction of Light>Atmospheric Refraction
Why do stars twinkle on a clear night?
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Science>Physics>Refraction of Light>Atmospheric Refraction
Why do stars twinkle?
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Science>Physics>Refraction of Light>Atmospheric Refraction
Explain why the planets do not twinkle at night.
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Science>Physics>Refraction of Light>Atmospheric Refraction
By how much time the day would have been shorter if the earth had no atmosphere?
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Science>Physics>Refraction of Light>Atmospheric Refraction

What is atmospheric refraction? Use this phenomenon to explain the following natural events :

(i) Twinkling stars

Draw diagrams to illustrate your answer.

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Science>Physics>Refraction of Light>Atmospheric Refraction
The stars twinkle but the planets do not twinkle at night because:
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Science>Physics>Refraction of Light>Atmospheric Refraction
The day is longer on the earth by about 4 minutes because: