Moment of inertia of a megnetic needle is `40 gm-cm^(2)` has time period 3 seconds in earth\'s
Channel: Doubtnut
Date: 19/01/2020

Moment of inertia of a megnetic needle is `40 gm-cm^(2)` has time period 3 seconds in earth\'s horizontal field `=3.6xx10^(-5) weber//m^(2)`. Its magnetic moment will be