MHT CET 2024 Physics question
A musical instrument 'P' produces sound waves of frequency 'n' and amplitude 'A'. Another musical instrument 'Q' produces sound waves of frequency . The waves produced by 'P' and 'Q' have equal energies. If the amplitude of waves produced by 'P' is '' the amplitude of waves produced by 'Q' will be
Answer: (B)
Solution
The energy carried by a wave in the same medium is proportional to , that is, to (since and ). Equal energies give . Hence and $
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