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Question: Answered & Verified by Expert
A massage signal of frequency 3 kHz  is used to modulate a carrier signal of frequency 1.5 MHz. The bandwidth of the amplitude modulated wave is
PhysicsCommunication SystemJEE MainJEE Main 2023 (10 Apr Shift 2)
Options:
  • A  6 MHz
  • B 6 kHz
  • C 3 MHz 
  • D 3 kHz
Solution:
2671 Upvotes Verified Answer
The correct answer is: 6 kHz

The relation between bandwidth and the signal frequency is given by

Bandwidth=2× signal frequency   ...1

Substitute the values of the known parameter into equation (1) to calculate the required bandwidth.

Bandwidth= 2 × 3 kHz= 6 kHz

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