JEE PHYSICS MCQ: MAGNETISM AND MATTER

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For a diamagnetic substance (symbols have their usual meanings)

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Correct option: C

\chi_m < 0, \mu_r < 1

Option D (None of the above) is correct because the speed of sound at a constant temperature depends only on the properties of the gas itself, not pressure or density independently.

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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

{2^{5/4}}

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

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