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JEE Main 8 April 2017 Paper Solved Paper

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Question : 28

Total: 90

A signal of frequency 20 kHz and peak voltage of 5 Volt is used to modulate a carrier wave of frequency 1.2 MHz and peak voltage 25 Volts. Choose the correct statement.

[Main 8 April 2017]

Modulation index=5, side frequency bands are at 1400 kHz and 1000 kHz
Modulation index=5, side frequency bands are at 21.2 kHz and 18.8 kHz
Modulation index=0.8, side frequency bands are at 1180 kHzand 1220 kHz
Modulation index=0.2, side frequency bands are at 1220 kHzand 1180 kHz

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