Q. 21. Q of a sonometer wire is 2 x 103. On plucking, it executes 240 vibrations per second. Calculate the time in wvhich the amplitude decreases to 1/e? of its initial value.

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Q. 21. Q of a sonometer wire is 2 x 103. On plucking, it executes
240 vibrations per second. Calculate the time in which
the amplitude decreases to 1/e? of its initial value.
Transcribed Image Text:Q. 21. Q of a sonometer wire is 2 x 103. On plucking, it executes 240 vibrations per second. Calculate the time in which the amplitude decreases to 1/e? of its initial value.
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