The note produced by a stretched string has a fundamental...
The note produced by a stretched string has a fundamental frequency of 400Hz. If the length of the string is doubled while the tension in the string is increased by a factor of 4, the frequency is
200Hz
400Hz
800Hz
1600Hz
Correct answer is B
F = 12L √Tm
T2 = 4T1 ; L2 = 2L1
2F1L12F2L2 = √T1T2
400×L1F×L1 = √T14T1
F = 400Hz
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