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The twinkling of stars is due to atmosph...

The twinkling of stars is due to atmospheric :

A

reflection of light

B

despersion of light

C

interference of light

D

refraction of light

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The correct Answer is:
D
NA
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LAKHMIR SINGH & MANJIT KAUR-THE HUMAN EYE AND THE COLOURFUL WORLD -Exercise
  1. Explain why, the sun can be seen about two minutes before actual sunri...

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  2. Explain why, if we look at objects through the hot air over a fire, th...

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  3. The twinkling of stars is due to atmospheric :

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  4. The atmospheric refraction of light causes the twinkling of :

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  5. The stars appear higher in the sky than they actually are, due to :

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  6. As light from a far off star comes down towards the earth :

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  7. We can see the sun before the actual sunrise by about :

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  8. Due to atmospheric refraction of sunlight, the time from sunrise to su...

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  9. The day is longer on the earth by about 4 minutes because :

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  10. We know that light refracts (or bends) when it goes from one medium to...

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  11. By how much time day would have been shorter if the earth had no atmos...

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  12. Which of the two is scattered more easily : light of shorter wavelengt...

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  13. What colour does the sky appear to an astronaut ?

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  14. What happens when a beam of sunlight enters a dusty room through a win...

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  15. Why does the sky appear blue on a clear day ?

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  16. Why does the sky appear dark (or black) to an astronaut instead of blu...

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  17. Why does the sun appear red at sunrise ?

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  18. Why does the sun appear red at sunset ?

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  19. Why are the 'danger signal' lights red in colour ?

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  20. The blue colour of sky is due to :

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