JEE PHYSICS MCQ: MAGNETISM AND MATTER

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Curie temperature is the one above which

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Correct option: D

Ferromagnetic changes to paramagnetic

Option D (Ferromagnetic changes to paramagnetic) is correct because the Curie temperature is the temperature above which a ferromagnetic material loses its ferromagnetic properties and becomes paramagnetic.

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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

{2^{5/4}}

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

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\mu_{\mathrm{f}}

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