Q282
The clear sky looks blue because
A.
reflection of light
B.
refraction of light
C.
diffraction of light
D.
dispersion of light
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
The clear sky looks blue because of dispersion of light. 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. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.