The amplitude of $ 15 \sin (1000 \pi t) $ is modulated by $ 10 \sin (4 \pi \mathrm{t}) $ signal. The amplitude modulated signal contains frequency(ies) of A. $ 500 \mathrm{Hz} $ B. $ 2 \mathrm{Hz} $ C. $ 250 \mathrm{Hz} $ D. $ 498 \mathrm{Hz} $ E. $ 502 \mathrm{Hz} $ Choose the correct answer from the options given below

JEE PHYSICS MCQ: COMMUNICATION SYSTEMS

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Application +4 | -1

The amplitude of

15 \sin (1000 \pi t)

is modulated by

10 \sin (4 \pi \mathrm{t})

signal. The amplitude modulated signal contains frequency(ies) of
A.

500 \mathrm{Hz}

2 \mathrm{Hz}

250 \mathrm{Hz}

498 \mathrm{Hz}

502 \mathrm{Hz}

Choose the correct answer from the options given below

View answer and explanation

Correct option: C

A, D and E only

Option C (A, D and E only) is correct because amplitude modulation produces the carrier frequency and sideband frequencies (carrier frequency plus and minus the modulation frequency).

JEE PHYSICS MCQ: COMMUNICATION SYSTEMS

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