Ozone layer in the outer atmosphere helps in: I. Reflecting radio waves and makes radio communication possible

(i) Heat waves: As heat waves are transverse or electromagnetic in nature.

Sky wave — Sky wave propagation can be achieved by ionospheric reflection of radio waves back towards the earth, in the frequency range from few MHz up to 30 to...

(d) Ionosphere is the top layer of the atmosphere. Radio waves are deflected in the ionosphere of the atmosphere. Ionosphere is composed of D, E and F layers. D layer...

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

(d) Radio waves are a type of electromagnetic radiation.

Personal communication means a communication between two persons either through oral, letter or through telephone etc, while mass communication includes the use of radio, television, press, films etc, for wider...

(d) A is not correct but R is correct.

(d) Neither 1 nor 2

(c) The source of ozone is the oxygen in the atmosphere. Ozone layer protects the living being from the UV radiation which reaches the earth.

(c) The main function of the ozone gas found in the ozonosphere is to absorb the ultraviolet solar radiation. Ozone absorbs the ultraviolet solar radiation and through this process, the...