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The amplitude of a carrier wave, having a peak amplitude of 50 V

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The amplitude of a carrier wave, having a peak amplitude of 50 V, is made to vary between 75 V and 25 V after its amplitude modouls modulation index will be equal to,

(1) 0

(2) 0.25

(3) 0.5

(4) 0.75

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(3) 0.5

Modulation index

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