Question

Blue colour of sky is consequence of
1. Reflection
2. Refraction
3. Scattering
4. Dispersion

Answer 1

Correct Answer - Option 3 : Scattering

The correct answer is Scattering.

• Sunlight reaches Earth's atmosphere and is scattered in all directions by all the gases and particles in the air.
  • Blue light is scattered more than the other colours because it travels as shorter, smaller waves.
  • This is why we see a blue sky most of the time.

•  The sky is blue due to a phenomenon called Raleigh scattering.
  • This scattering refers to the scattering of electromagnetic radiation (of which light is a form) by particles of a much smaller wavelength.
  • Scattering affects the colour of light coming from the sky, but the details are determined by the wavelength of the light and the size of the particle.
  • Our eyes are more sensitive to blue rather than violet this means to us the sky appears blue.