Physics PYQ 167 of 288 · Optics

The phenomenon due to which the sky appears blue

  1. AReflection of light
  2. BDispersion of light
  3. CScattering of light
  4. DMore than one of the above
  5. ENone of the above

BPSC TRE-3 (Jul 2024)

Show answer and explanation

Correct answer: (c) Scattering of light

Explanation

The sky looks blue because of the scattering of light: air molecules scatter short-wavelength blue light far more than red light.

At sunrise and sunset, light travels through more air, the blue is scattered away, and the sun and sky look red.

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