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If both the length of an antenna and the...

If both the length of an antenna and the wavelength of the signal to be transmitted are doubled, the power radiated by the antenna

A

is doubled

B

is halved

C

increases 16 times

D

remains constant

Text Solution

Verified by Experts

Power radiated by the antenna is proportional to `(l//lambda)^(2)`. When both, the length of the antenna l and wavelenght of the signal `lambda` are doubled then `(l//lambda)^(2)` remains unchanged. Due to it, the power radiated by the antenna remains constant.
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