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

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 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 moment of inertia I is vibrated in a magnetic field of inducton is 0.4xx10^(-4)T . The time period period of vibration is 12 sec. The magnetic moment of the magnet is 120Am^(2) . The moment of inertia of the magnet is ("in"kgm^(2)) approximately

A bar magnet of moment of inertia I is vibrated in a magnetic field of inducton is 0.4xx10^(-4)T . The time period period of vibration is 12 sec. The magnetic moment of the magnet is 120Am^(2) . The moment of inertia of the magnet is ("in"kgm^(2)) approximately

The magnetic moment of a magnet is 0.1 ampxxm^(2) . It is suspended in a magnetic field of intensity 3xx10^(-4)"weber"//m^(2) . The couple acting upon it when deflected by 30^(@) from the magnetic field is

The magnetic moment of a magnet is 0.1 ampxxm^(2) . It is suspended in a magnetic field of intensity 3xx10^(-4)"weber"//m^(2) . The couple acting upon it when deflected by 30^(@) from the magnetic field is

Time period of cillations of a magnet of magnetic moment M and moment of inertia l in a vertical plane perpendicular to the magneitc meridian at a place where earth's horizontal and vertical component of magnetic field are B _(H) and B_(v) respectively is