The phenomena involved in the reflected 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

2

Explanation

Radiowaves are reflected bya layer of atmosphere called the ionosphere, so they can reach distant parts of the Earth. The reflection of radio waves by ionosphere is due to total internal reflection. It is the same as total internal reflection of light in air during a mirage, i.e., of incidence is greater than
critical angle.