A bar magnet takes `pi/10` second to complete one oscillation in an oscillation magnetometer. The moment of inetria of the magnet about the axis of rotation is 1.2 xx 10^(-4) kg m^2` and the earth's horizontal magnetic field is `30 muT`. Find the magentic moment of the magnet.

A bar magnet of mass 100 g, length 7.0 cm, width 1.0 cm and height 0.50 cm takes pi/2 seconds to complete an oscillation in an oscillation magnetometer placed in a horizontal magnetic field of 25 muT . (a) Find the magnetic moment of the magnet. (b) If the magnet is put in the magnetometer with its 0.50cm edge horizontal, what would be the time period?

A small bar magnet of magnetic moment 9.75 xx 10^(-3) J T^(-1) is suspended from its centre of garvity and is free to rotate in a plane containing a uniform magnetic filed. It is displaced from its stable equilibrium and the period of oscillations is found to be 2.50 s.If the moment of inertia of the magnet about its axis of rotation is 1.25 xx 10^(-5) kg m^(2) , determine of inertia of the magnetic field.

A bar magnet of length 5cm, width 3cm and height 2cm takes 5s to complete an oscillation in viberation magnetometer placed in a horizontal magnetic field of 20muT . The mass of this bar magnet is 250g(a). Find the magnetic moment of the magnet. (b) If the magnet is put in the magnetormer with its 0.5cm edge horizontal, what would be the new time period?

The period of oscillation of a vibration magnetometer depends on which of the following factors? where I is the moment of inertia of the magnet about the axis of suspension, M is the magnetic moment of the magnet and H is the external magnetic field

A short magnet makes 40 oscillations per minute when used in an oscillation magnetometer at a place where the earth's horizontal magnetic field is 25 muT . Another short magnet of magnetic moment 1.6 A m^2 is placed 20 cm east of the oscillating magnet. Find the new fregquency of oscillation if the magnet has its north pole (a) towards north and (b) towards south.

A bar magnet of moment of inertia 1xx10^(-2)kgm^(2) vibrates in a magnetic field of induction 0.36xx10^(-4) tesla. The time period of vibration is 10s . Then the magnetic moment of the bar magnet is (Am^(2))

A bar magnet is put on the hanger of oscillation magnetometer and is made to oscillate in earth's magnetic field. Frequency of oscillation of bar magnet is found to be 3 Hz at a place where horizontal component of earth's magnetic field is 25 muT . Now a short magnet is placed to the north of magnetometer in such a manner that its North Pole points towards north. Distance of short magnet from the bar magnet hanging inside the magnetometer is 1 m. Frequency of oscillation now becomes 6 Hz. What is magnetic moment of short magnet?

The perio of oscillation of a magnet in vibration magnetometer is 2 sec. The period of oscillation of a magnet whosr magnetic moment is four times that of the first magnet is

A short magnet produces a deflection of 37^@ in a deflection magnetometer in Tan-A position when placed at a separation of 10cm from the needle. Find the ration of the magnetic moment of the magnet to the earth's horizontal magentic field.