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Question 13: NCERT Solutions for 12th Class Physics: Chapter 5-Magnetism and Matter

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Question 13: NCERT Solutions for 12th Class Physics: Chapter 5-Magnetism and Matter

A short bar magnet placed in a horizontal plane has its a×is aligned along the magnetic north-south direction. Null points are found on the axis of the magnet at 14 cm from the centre of the magnet. The earth’s magnetic field at the place is 0.36 G and the angle of dip is zero. What is the total magnetic field on the normal bisector of the magnet at the same distance as the null-point (i.e., 14 cm) from the centre of the magnet? (At null points, field due to a magnet is equal and opposite to the horizontal component of earth’s magnetic field.)

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  1. Solution:
    Angle of dip is zero at the place, so earth’s magnetic field is uniform with magnitude 0.36 G in the direction geographi¬cal south to geographical north.

    Check the complete chapter with solutions.

    NCERT Solutions for 12th Class Physics: Chapter 5-Magnetism and Matter