CUET · PHYSICS · PYQ PAPER 2023
The correct mathematical expression for amplitude modulated wave is :
- A \( A_c \sin \omega_c t \)
- B \( A_m \sin \omega_m t \)
- C \( (A_c + A_m \sin \omega_m t) \sin \omega_c t \)
- D \( A_c \sin \omega_c t + A_m \sin \omega_m t \)
Answer & Solution
Correct Answer
(C) \( (A_c + A_m \sin \omega_m t) \sin \omega_c t \)
Step-by-step Solution
Detailed explanation
In Amplitude Modulation, the instantaneous amplitude of the high-frequency carrier wave is varied in proportion to the instantaneous amplitude of the modulating (message) signal. C) \(\left(A_c+A_m \sin \omega_m t\right) \sin \omega_c t\).
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