JEE PHYSICS MCQ: MAGNETISM AND MATTER

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Assertion(A): If one arm of a U-tube containing a dia magnetic solution is placed in between the poles of a strong magnet with the level in line with the field, the level of the solution falls,

Reason(R): Diamagnetic substances are repelled by the magnetic field.

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Correct option: A

If both (A) and (R) are true and the (R) is a correct explanation of the (A)

Option A is correct because diamagnetic substances are repelled by magnetic fields, causing the liquid level to fall in the arm placed within the field.

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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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\mu_{\mathrm{f}}

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