Sodium lamps are used in foggy conditions because

Options

A. (a) yellow light is scattered more by the fog particles
B. (b) yellow light is unaffected during its passage through the fog
C. (c) yellow light is scattered less by the fog particles
D. (d) wavelength of yellow light is the mean of the visible part of the spectrum

Answer

C

Explanation

Sodium light emits monochromatic light which has only one colour (deep yellow). This colour is scattered less by the fog particles. While the other light sources comprise lights of many different colours (of different wavelengths) so they are scattered most due to they provide some degree of colour rendering.