The phenomena involved in the reflection of radiowaves by ionosphere is similar to

Options

A. reflection of light by a plane mirror.
B. total internal reflection of light in air during a mirage.
C. dispersion of light by water molecules during the formation of a rainbow.
D. scattering of light by the particles of air.

Answer

A, B, C, D

Explanation

In summer, air on the Earth.s surface is hot and hence less dense. Density of air in summer) increases as height from surface of Earth increases. Hence when light ray enters from denser to rarer medium, it bends away from normal, increasing the angle of incidence. When i `gt` C, mirage takes place. This phenomenon is similar to reflection of radiowaves from ionosphere.