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The tension in a wire is decreased by 19...

The tension in a wire is decreased by `19%` The
percentage decrease in frequency will be

A

0.81

B

0.0019

C

0.1

D

0.019

Text Solution

Verified by Experts

The correct Answer is:
C
`T_2 = 81/100T_1`
`n_2/n_1 = sqrt(T_2/T_1) = sqrt(81/100) = 9/10`
`(n_1-n_1)/(n_1) = (9-10)/(10) = (-1)/(10) = 10%`
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