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The linear density of a vibrating string...

The linear density of a vibrating string is `1.3 xx 10^(-4) kg//m` A transverse wave is propagating on the string and is described by the equation `y= 0.021 sin (x + 30 t)` where x and y are measured in meter and t`t` in second the tension in the string is :-

A

0.12 N

B

0.48 N

C

1.20 N

D

4.80 N

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The correct Answer is:
A
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