A string in musical instrument is 50 cm long and its fundamental frequency is 800 Hz. If a frequency of 1000 Hz is to be produced, then required length of string is

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62.5 cm

50 cm

40 cm

37.5 cm

answer is C.

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Detailed Solution

n1l1=n2l2⇒800×50=1000×l2⇒l2=40cm

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