GENERAL KNOWLEDGE

GK

GENERAL SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The blue colour of the clear sky is due to
A
Diffraction of light
B
Dispersion of light
C
Reflection of light
D
Refraction of light
Explanation: 

Detailed explanation-1: -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 colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.

Detailed explanation-2: -The blue color of the sky is due to the scattering of light by the atmospheric particles. Light of shorter wavelength scatters more than the light of longer wavelengths and the violet color has shorter wavelength, but our eyes are more sensitive to blue light. Hence, the color of a clear sky is blue.

Detailed explanation-3: -A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. Blue colour gets scattered the maximum since the particles present in the atmosphere have size which is comparable to the wavelength of blue light.

Detailed explanation-4: -Assertion :Blue colour of sky appears due to scattering of light. Reason: Blue colour has shortest wavelength among all colours of white light.

There is 1 question to complete.