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in Physics by (56.1k points)

A magnetic needle of magnetic moment 6.7 x 10-2 Am2 and moment of inertia 7.5x 10-6 kg m2 is performing simple harmonic oscillations in a magnetic field of 0.01T. Time taken for 10 complete oscillations is

(a) 8.89s (b) 6.98s (c) 8.76s (d) 6.65s 

1 Answer

+2 votes
by (78.5k points)
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Best answer

Correct Option(d) 6.65s 

Explanation:

Time period of oscillation is

Hence, time for 10 oscillations is t=6.65s.

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