JEE PHYSICS MCQ: MAGNETISM AND MATTER

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A vertical pillar of soft iron partially embedded in earth, at south pole, is found to be magnetized by the earth's magnetic field. The polarity at the top end of the pillar will be

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Correct option: B

North pole

Option B is correct because at the South Pole, the Earth's magnetic field lines exit the Earth, magnetizing the iron pillar with a North Pole at the top.

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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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