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In communication with help of antenna if the height is doubled, then the range covered which was initially r would become what?

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in Physics – Class 12 by (135k points)
In communication with help of antenna if the height is doubled, then the range covered which was initially r would become what?

(a) √2r

(b) 3r

(c) 4r

(d) 5r

This question was addressed to me in a job interview.

Asked question is from Communication Systems in portion Communication Systems of Physics – Class 12

1 Answer

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Best answer
The correct answer is (a) √2r

Explanation: Initial range, r = √2Rh.

When the height of the antenna is doubled,

r’ = √2R × 2h = √2r.

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