MediumPhysicsfluid
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-- Two magnets of magnetic moments M and 2M are placed in a vibration magnetometer, with like poles together and then with unlike poles together. The ratio of their time periods (T1/T2) will be
A
1/√3
B
√3
C
1/3
D
3
Explanation
Time period T ∝ 1/√(M_net). Case 1 (Like poles): M_net = 2M + M = 3M. Case 2 (Unlike poles): M_net = 2M - M = M. Ratio T1/T2 = √(M_unlike / M_like) = √(M / 3M) = 1/√3.
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