A metal wire of linear mass density of `9.8g//m` is stretched with a tension of `10 kg-wt`
Channel: Doubtnut
Date: 2020-07-05

A metal wire of linear mass density of `9.8g//m` is stretched with a tension of `10 kg-wt` between two rigid support `1meter` apart. The wire passes at its middle point between the poles of a permanent magnet, and it vibrates in resonance when carrying an alternating current of frequency `n`. the frequency `n` of the alternating source is