A magnetic needle of magnetic moment `6*7xx10^-2Am^2` and moment of inertia `
Channel: Doubtnut
Date: 2020-08-02

A magnetic needle of magnetic moment `6*7xx10^-2Am^2` and moment of inertia `7*5xx10^-6kgm^2` is performing simple harmonic oscillations in a magnetic field of `0*01T`. Time taken for 10 complete oscillation is