Physics · 2022
JEE Main · 27 June 2022, Shift 2 · Q50
We do not transmit low frequency signal to long distances because- (a) The size of the antenna should be comparable to signal wavelength which is…
We do not transmit low frequency signal to long distances because-
(a)
The size of the antenna should be comparable to signal wavelength which is unreal solution for a signal of longer wavelength.
(b)
Effective power radiated by a long wavelength baseband signal would be high.
(c)
We want to avoid mixing up signals transmitted by different transmitter simultaneously.
(d)
Low frequency signal can be sent to long distances by superimposing with a high frequency wave as well.
Therefore, the most suitable option will be :
Official answer
(3)
(a) , (c) and (d) are true only
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.