CUET · PHYSICS · PYQ PAPER 2023
A carrier wave of peak voltage 24 V is used to transmit a message signal. What should be the peak voltage of the modulating signal in order to have a modulation index of 70% ?
- A 16.8 V
- B 2.9 V
- C 18 V
- D \(16.8 \times 10^2 V\)
Answer & Solution
Correct Answer
(A) 16.8 V
Step-by-step Solution
Detailed explanation
\( V_m = \mu \times V_c \) \( V_m = 0.70 \times 24 \, \text{V} \) \( V_m = 16.8 \, \text{V} \)
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