Wave motionHard

Question

A metal wire of linear mass density of 9.8 gm 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 per magnet and it vibrates in resonance when carrying an alternating current of frequency n. The frequency n of the alternating source is

Options

A.50 Hz
B.100 Hz
C.200 Hz
D.25 Hz

Solution

Frequency of oscillation n =
= × 102 = × 102 = 50Hz

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