Question

Find the wrong statement.

(a) Clouds appear white for most of the day because the sun radiates all visible wavelengths of light

(b) The rays have to travel a shorter distance than usual at sunrise and sunset

(c) Danger signals are red because red color gets scattered the least

(d) The sky is blue because blue light is scattered more than other colors since it travels as shorter waves

This question was posed to me during an internship interview.

I need to ask this question from Ray Optics topic in section Ray Optics and Optical Instruments of Physics – Class 12

Answer 1

The correct option is (b) The rays have to travel a shorter distance than usual at sunrise and sunset

Explanation: During sunrise and sunset, the rays have to travel a large part of the atmosphere since the rays are close to the horizon at that time. That is why, red being the least scattered enters our eyes, as all the other colors get scattered away.