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AIEEE 2003 Physics Solved Paper

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Question : 34

Total: 74

A metal wire of linear mass density of 9.8g/m is stretched with a tension of 10‌kg−wt between two rigid supports 1 metre 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

50 Hz
100 Hz
200 Hz
25 Hz

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