A bar magnet is placed coaxially from a smal magnetic needle

Last updated: 6/8/2023

A bar magnet is placed coaxially from a smal magnetic needle and frequency of smal oscillations of the needle is found to f rev s now bar magnet is reversed in direction and frequency of oscillations of the needle is found to be f2 f1 rev s The frequency of the needle if bar magnet is completely removed from this place and magnetic needle is allowed to oscillate only in earth s magnetic field is 2 ff 1 TS 4 dations 1 1 2 2