Question

The phenomena involved in the reflection of radiowaves by
ionosphere is similar to
(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 1

Answer:

it is similar to total internal reflection, where,incident ray is reflected back to the same medium itself..

Answer 2

Hope you understand

Explanation:

The ionosphere is the ionized layer of the Earth's atmosphere and its consists of the ions which are formed due to the UV rays coming from the sun. These free electrons result in the reflection of the radio waves and make them reflected back.

This is same as the mirage formation due to the total internal reflection of the rays when the incident angle is greater than the critical angle