Question

A magnet is divided into 3 parts A,B andC.name theparts where the magnetic field strength is max. and min.? how will density of magnetic fieldlines differ at these places

Answer 1

See you've not mentioned whether A and C are poles or not but if they are poles then I am giving you the answer

max strength will be on A and C because magnetic fiend strength is stronger at poles.  It will be min.  at B.

More the density of magnetic field line more is the magnetic field.

Answer 2

(i) Maximum magnetic field is in the region A and C. 

 (ii) Minimum magnetic field is in the region B.  This is because A and C are magnetic poles and have maximum number of magnetic field lines which determine the intensity of magnetic field while B is centre of the magnet that has no magnetic field lines. So intensity of magnetic field near B is almost zero.



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