Question

A layer in the Earth’* atmosphere called ionosphere facilities radio communication. Why ?

1. The presence of ozone causes the reflection of radio waves to earth.

2. Radio waves have a very long wavelength. Which of the statements given above is/are correct?

(a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Answer 1

(d) Ionosphere has high concentration of free electrons and gases. These free electrons completely surrounds the earth.