A compass needle whose magnetic moment is `60Am^2` pointing geographic
Channel: Doubtnut
Date: 2020-08-02

A compass needle whose magnetic moment is `60Am^2` pointing geographic north at a certain place, where the horizontal component of earth's magnetic field is `40mu Wb//m^2`, experience a torque `1*2xx10^-3Nm`. What is the declination of the place?