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MHT CET 2026 (13 Apr, Shift 1) · Wave Basics & Properties of Sound

Wave Basics & Properties of Sound question from MHT CET 2026 (13 Apr, Shift 1)

Q11MHT CET 2026 · 13 APR · SHIFT 1Medium

Wave Basics & Properties of Sound

A musical instrument P produces sound waves of frequency 'n' and amplitude 'A'. Another musical instrument Q produces sound waves of frequency n/4. The waves produced by P and Q have equal energies. The amplitude of waves produced by Q will be

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Answer: (c)

Wave energy $E \propto A^2 n^2$ .
Equal energies: $A_Q n_Q = A n \Rightarrow A_Q = A \frac{n}{n/4}$
$A_Q = 4A$
So the answer is (c) $4A$ .

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