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Earn 100

Why Planets do not twinkle?

Important Questions on Refraction of Light

HARD
Science>Physics>Refraction of Light>Atmospheric Refraction
Explain the formation of a rainbow.
MEDIUM
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
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
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
Because of early sunrise and late sunset, the length of day becomes _____ minutes long. 
MEDIUM
Science>Physics>Refraction of Light>Atmospheric Refraction
Rainbow is a phenomenon due to:
MEDIUM
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?
 
EASY
Science>Physics>Refraction of Light>Atmospheric Refraction
Which of the following statement is correct?
MEDIUM
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
Write the reason for twinkling of stars in the sky.
MEDIUM
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
A student claims that because of atmospheric refraction, the sun can be seen after it has set, and the day is, therefore, longer than if the earth had no atmosphere. Do you think that the students' conclusion is correct?
EASY
Science>Physics>Refraction of Light>Atmospheric Refraction
The twinkling of stars is due to atmospheric:
MEDIUM
Science>Physics>Refraction of Light>Atmospheric Refraction
Why do planets not twinkle?
MEDIUM
Science>Physics>Refraction of Light>Atmospheric Refraction
Why the sun is seen about two minutes before actual sunrise? Illustrate your answer with neat sketch.
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Science>Physics>Refraction of Light>Atmospheric Refraction
We can see the sun before the actual sunrise by about:
EASY
Science>Physics>Refraction of Light>Atmospheric Refraction
Why do stars twinkle on a clear night?