JEE PHYSICS MCQ: MAGNETISM AND MATTER

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The time period of a freely suspended bar magnet in a field is 2 s. It is cut into two equal parts along its axis, then the time period is

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Correct option: C

2 s

Option C (2 s) is correct because the time period remains the same after cutting the magnet along its axis, as the ratio of moment of inertia to magnetic moment remains unchanged.

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Curie temperature is the one above which A vibration magnetometer consists of two identical bar magnets placed one over the other such that they are perpendicular and bisect each other. The time period of oscillation in a horizontal magnetic field is

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\mu_{\mathrm{d}}, \mu_{\mathrm{p}}

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