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In communication with help of antenna, i...

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

A

`sqrt(2)r`

B

3r

C

4r

D

5r

Text Solution

Verified by Experts

The correct Answer is:
A
Range `r = sqrt(2 Rh)`
where R is the radius of the earth and h is the height of a antenna
`therefore r' = sqrt(2R(2h))=sqrt(2)(sqrt(2Rh))=sqrt(2)r`.
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