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qUESTIONS

MCQs-PYQs-12th-jee

A coil carrying current l has radius r and number of turns n it is rewound so that radius of new coil is r/4 and it carries current l the ratio of magnetic moment of new coil to that of original coil is

MCQs-PYQs-12th-jee

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

MCQs-PYQs-12th-jee

Time period of a freely suspended magnet does not depend upon

MCQs-PYQs-12th-jee

Two small bar magnets are placed in a line at certain distance d apart. If length of each magnet is negligible compared to d, the force between them will be inversely proportional to

MCQs-PYQs-12th-jee

A uniform magnetic field parallel to the plane of the paper exists in space initially directed from left to right. When a bar of soft iron is placed in the field parallel to it, the lines of force passing through it will be represented by

MCQs-PYQs-12th-jee

Magnetic lines of force.

MCQs-PYQs-12th-jee

Which of the following is the most suitable material for making permanent magnet.

Keeping dissimilar poles of two magnets of equal pole strength and length same side, their time period will be.

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