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← JEE Main 2022 · 29 Jul · Shift 2
PhysicsInteger+4 / -1Question 55 of 90

JEE Main 2022 · 29 Jul · Shift 2, Physics question 55

A modulating signal 2sin⁡(6.28×106)t2\sin(6.28\times10^6)t is added to the carrier signal 4sin⁡(12.56×109)t4\sin(12.56\times10^9)t for amplitude modulation. The combined signal is passed through a non-linear square law device. The output is then passed through a band pass filter. The bandwidth of the output signal of band pass filter will be _______ MHz.

Answer and worked solution

Official answer: 2

Sidebands at fc±fmf_c\pm f_m with fm=6.28×1062π=1f_m=\frac{6.28\times10^6}{2\pi}=1 MHz: bandwidth 2fm=22f_m=2 MHz.

Answer: 2

Topics:Modulation