Questions in magnetism

Select	Question
	An iron rod of length L and magnetic moment M is bent in the form of a semicircle. Now its magnetic moment will be
	Unit of magnetic flux density (or magnetic induction) is
	Magnetic intensity for an axial point due to a short bar magnet of magnetic moment M is given by
	A magnet is placed in iron powder and then taken out, then maximum iron powder is at
	A magnet of magnetic moment M and pole strength m is divided in two equal parts, then magnetic moment of each part will be
	Points A and B are situated along the extended axis of 2 cm long bar magnet at a distance x and 2x cm respectively. From the pole nearer to the points, the ratio of the magnetic field at A and B will be
	If a magnet of pole strength m is divided into four parts such that the length and width of each part is half that of initial one, then the pole strength of each part will be
	The distance of two points on the axis of a magnet from its centre is 10 cm and 20 cm respectively. The ratio of magnetic intensity at these points is 12.5 : 1. The length of the magnet will be
	Ratio of magnetic intensities for an axial point and a point on broad side-on position at equal distance d from the centre of magnet will be or The magnetic field at a distance d from a short bar magnet in longitudinal and transverse positions are in the ratio
	The magnetism of magnet is due to

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