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A long magnetic needle of length 2L, mag...

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

A

`M 2, m//2`

B

`M, m//2`

C

`M//2, m`

D

`M,m`

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The correct Answer is:
C
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