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

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

(a) √2r

(b) 3r

(c) 4r

(d) 5r

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1 Answer

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Best answer

The correct option is (a) √2r.

Explanation:

Range r = √2RH 

where R is the radius of the earth and h is the height of a antenna

r' = √2R(2h) = √2(√2RH) = √2r

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