A wire having a linear mass density 10^(...

A wire having a linear mass density `10^(-3) kg//m` is stretched between two rigid supports with a tension of `90 N`. This wire resontes at a frequency of `350 Hz`. The next higher frequency at which the same wire resonates is `420 Hz`. Find the length of the wire.

`350 Hz`

`5 Hz`

`70 Hz`

`170 Hz`

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