A magnetic needle suspended horizontally by an unspun silk fibre, oscillates in the horizontal plane because of the restoring force originating mainly from

A freely suspended magnet lies in the horizontal plane at ___________of earth.

A dip needle vibrates in a vertical plane with time period of 3 second . The same needle is suspended horizontally and made to vibrate is a horizontal plane . The time period is again 3 sec. The angle of dip at that place is .

A dip needle vibrates in a vertical plane with time period of 3 second . The same needle is suspended horizontally and made to vibrate is a horizontal plane . The time period is again 3 sec. The angle of dip at that place is .

A magnet is suspended horizontally in the earth's field. The period of oscillation in the place is T . If a piece of wood of the same moment of inertia as the magnet is attached to it, new period of oscillation would be

A magnetic needle suspended by a silk thread is vibrating in the earth's magnetic field. If temperature of the needle is increased to 1000^(@)C , then

A magnetic needle suspended by a silk thread is vibrating in the earth's magnetic field. If temperature of the needle is increased to 1000^(@)C , then

A magnetic needle kept on horizontal surface oscillates in Earth's magnetic field. If the temperature of this needle is raised beyond the Curie temperature of the material of the needle, then ........ .

A magnetic needle performs 20 oscillations per minute in a horizontal plane. If the angle of dip be 30^@ , then how many oscillation per minute will this needle perform in vertical, north south plane and in vertical east -west plane?