23 JEE Main 2023 Communication System previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2023 previous-year questions from the Communication System chapter of Physics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Communication System chapter hub.
Given below are two statements Statement I : For transmitting a signal, size of antenna ( l ) should be comparable to w…
To radiate EM signal of wavelength λ with high efficiency, the antennas should have a minimum size equal to:
In satellite communication, the uplink frequency band used is:
Match List I with List II LIST I LIST II A AM Broadcast I 88 - 108   MHz B FM Broadcast II 540 - 1600   kHz C…
A modulating signal is a square wave, as shown in the figure. If the carrier wave is given as c t = 2 sin 8 π t vo…
A transmitting antenna is kept on the surface of the earth. The minimum height of receiving antenna required to receive…
The amplitude of 15   sin ( 1000   π t ) is modulated by 10   sin ( 4   π t ) signal. The…
The modulation index for an A.M. wave having maximum and minimum peak to peak voltages of 14   mV and 6   mV…
A sinusoidal carrier voltage is amplitude modulated. The resultant amplitude modulated wave has maximum and minimum amp…
Match List I with List II List I List II A Attenuation I Combination of a receiver and transmitter B Transducer II Proc…
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