A metal wire of linear mass density of 9 8 g m is stretched

Last updated: 6/4/2023

A metal wire of linear mass density of 9 8 g m is stretched with a tension of 10 kg wt between two rigid supports 1 metre apart The wire passes at its middle point between the poles of a bar magnet and it vibrates in resonance when carrying an alternating current of frequency n The frequency n of the alternating source is 2003 1 50 Hz 3 200 Hz 2 100 Hz 4 25 Hz