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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A magnetic needle of magnetic moment 6.7 x 10^-2 Am^2 and moment of interia 7.5 x 10^-6 Kg m^2 is performing simple harmonic oscillation in a magnetic field of 0.01 T. time taken for 10 complete oscillation is

A magnetic needle of magnetic moment 6.7 x 10^-2 Am^2 and moment of interia 7.5 x 10^-6 Kg m^2 is performing simple harmonic oscillation in a magnetic field of 0.01 T. time taken for 10 complete oscillation is

The magnet of a vibration magnetometer is heated so as to reduce its magnetic moment by 36 %. By doing this the period time of the magnetometer will