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• Topic:

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A long magnetic needle of length 2L, magnetic moment M and pole strength m units is broken into two pieces at the middle. The magnetic moment and pole strength of each piece will be

(a) $\frac{M}{2},\frac{m}{2}$

(b) $M,\frac{m}{2}$

(c) $\frac{M}{2},m$

(d) M, m