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A wire having a linear mass density `5.0 xx 10^(-3) kg//m` is stretched between two rigid supports with a tension of 450 N. The wire resonates at a frequency of 420 Hz. The next higher frequency at which the same wire resonates is 490 Hz. Find the length of the wire.

A

`1.2 m`

B

`1.8 m`

C

`2.1 m`

D

`8.1 m`

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The correct Answer is:
C
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