Q147 / 150 · MHT CET 2019 (Shift 2) · Physics

In frequency modulated wave

Correct answer
A
Frequency varies with time
B
Both frequency and amplitude vary with time
C
Amplitude varies with time
D
Both frequency and amplitude are constant

Solution

In frequency modulated wave, only frequency varies with time, while the amplitude remains constant. This wave can be shown as

It is used in FM broadcasting, telemetry and RADAR etc.

Hence, the correct answer is option: 'A'.

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