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Which of the following statements aligns with the relationship described by Curie's law, χm ∝ 1/T?

1. A diamagnetic substance placed in a magnetic field shifts from regions of higher field strength to regions of lower field strength.
2. As the magnetic field is oriented vertically and the needle can only rotate horizontally, the magnetic force cannot influence the needle's horizontal movement, allowing it to remain in any orientation.
3. The oscillation period of a vibration magnetometer is inversely proportional to the square root of the magnetic field strength.
4. The ratio of time periods for two cases, T₁/T₂, equals the square root of the ratio of magnetic field strengths, √(B₂/B₁) = √(24 × 10⁻⁶/6 × 10⁻⁶) = 4 s.

Correct answer: The oscillation period of a vibration magnetometer is inversely proportional to the square root of the magnetic field strength.

Solution

Option C is correct because the time period of a vibration magnetometer is inversely proportional to the square root of the magnetic field strength, as derived from the formula T ∝ 1/√B.

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