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Question
The attenuation of surface waves
The attenuation of surface waves
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Solution
The correct option is A increases
When a ground wave propagates over the surface of the earth, eddy currents are induced in the surface of the earth which causes attenuation of these waves. Moreover, as they travel over the earth's surface they bend along the curvature of the earth which results in energy losses. Thus, ground wave propagation is restricted to small distances. The maximum range of coverage depends upon the transmitted power and frequency because
the high-frequency waves suffer more absorption of energy in earth's atmosphere. Hence it cannot be used for high-frequency TV and frequency modulated (FM) broadcasts.
When a ground wave propagates over the surface of the earth, eddy currents are induced in the surface of the earth which causes attenuation of these waves. Moreover, as they travel over the earth's surface they bend along the curvature of the earth which results in energy losses. Thus, ground wave propagation is restricted to small distances. The maximum range of coverage depends upon the transmitted power and frequency because
the high-frequency waves suffer more absorption of energy in earth's atmosphere. Hence it cannot be used for high-frequency TV and frequency modulated (FM) broadcasts.
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