Question
Physics Question on Ray optics and optical instruments
: Sun looks reddish at sunrise and sunset. : Sun rays have to pass through a larger distance in atmosphere.
A
If both assertion and reason are true and reason is the correct explanation of assertion
B
If both assertion and reason are true but reason is not the correct explanation of assertion
C
If assertion is true but reason is false
D
If both assertion and reason are false
Answer
If both assertion and reason are true and reason is the correct explanation of assertion
Explanation
Solution
At sunset and sunrise, the sun rays have to pass through a larger distance in the atmosphere. Most of the blue and other shorter wavelengths are removed by scattering. The least scattered light reaches our eyes, therefore the sun looks reddish.