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Question

Which one of the following statements is correct?
  1. The stars appear higher in the sky than they actually are, due to scattering of light
  2. The planets twinkle at night due to atmospheric refraction of light
  3. The blue colour of sky is due to scattering of light
  4. The rainbow is produced by the reflection of white sunlight by water drops in the atmosphere.

A
The stars appear higher in the sky than they actually are, due to scattering of light
B
The rainbow is produced by the reflection of white sunlight by water drops in the atmosphere.
C
The blue colour of sky is due to scattering of light
D
The planets twinkle at night due to atmospheric refraction of light
Solution
Verified by Toppr

The blue colour of the sky is due to the scattering of light by small particles of the atmosphere (air molecules). When white light (from the sun) enters the earth's atmosphere, it gets scattered away due to the atmospheric particles. Since blue colour has the minimum wavelength, so blue colour scatters the most and thus the sky appears blue.

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Similar Questions
Q1
Blue colour of sea water is due to
A) interference of sunlight reflected from the water surface
B) scattering of sunlight by the water molecules
C) Image of the sky in water
D) refraction of sunlight
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Q2
Assertion(A): The sky appear dark instead of blue to an astronaut.

Reason(R) : Scattering of sunlight cannot happen due absence of atmosphere in outer space.
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Q3
Question 6
Twinkling of stars is due to atmospheric

(a) dispersion of light by water droplets
(b) refraction of light by different layers of varying refractive indices
(c) scattering of light by dust particles
(d) internal reflection of light by clouds
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Q4
Stars appear to twinkle in the night sky due to:
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Q5
Match the following :
LIST I LIST II
A) Rainbow 1) Scattering of light
B) Twinkling of stars 2) Dispersion of light
C) Blue colour of sky 3) Fluctuation of the refraction index in atmosphere layers
D) Advancement of sunrise and delay of sunset 4) Refraction of light

View Solution