Verified Solution • 2025–26 Session
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QJEEM22Phbe18: JEE Main 2022 Physics - Class 12 JEEM22Phbe18 Solution: We do not transmit low frequency signal to long distances…
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 :
Multiple Choice Options
- A All statements are true
- B (a), (b) and (c) are true only
- C (a), (c) and (d) are true only
- D (b), (c) and (d) are true only
Step-by-Step Verified Solution
For longer wavelength, size of antenna would increase. Also, mixing of signals needs to be avoided.
Also, we can use modulation to send low frequency signal by superimposing them with high frequency signals.