Question

Blue colour of the sky is due to

• A. Reflection of light
• B. Refraction of light
• C. Diffraction of light
• D. Scattering of light

Hint:

When considering the blue sky, remember that Rayleigh scattering causes shorter wavelengths like blue to be scattered more than others, making the sky appear blue.

Answer 1

The Correct Option is D

The blue color of the sky is primarily caused by the scattering of sunlight by the Earth's atmosphere. This phenomenon is known as Rayleigh scattering, where shorter wavelengths of light, like blue, are scattered more than longer wavelengths like red. As sunlight passes through the atmosphere, the light is scattered in different directions by air molecules and particles, and the blue light is scattered more because it has a shorter wavelength.
Thus, the correct answer is option (4) Scattering of light.