Physics - Magnetism Question with Solution | TestHub

Two bar magnets$\mathrm{A}$and$\mathrm{B}$are placed one over the other and are allowed to Vibrate in a vibration magnetometer. They make$20$oscillations per minute when the similar poles of$\mathrm{A}$and$\mathrm{B}$are on the same side, while they make$15$oscillations per minute when their opposite poles lie on the same side. If${\mathrm{M}}_{\mathrm{A}}$and${\mathrm{M}}_{\mathrm{B}}$ are the magnetic moments of$\mathrm{A}$and$\mathrm{B}$and if${\mathrm{M}}_{\mathrm{A}}>{\mathrm{M}}_{\mathrm{B}}$, the ratio of${\mathrm{M}}_{\mathrm{A}}$and${\mathrm{M}}_{\mathrm{B}}$is