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If a bar magnet of pole strength m and m...

If a bar magnet of pole strength m and magnetic moment M is cut equally 5 times parallel to its axis and again 3 times perpendicular to its axis, then the pole strength and magnetic moment of each piece are respectively.

A

m,M

B

`m//2 ,M`

C

`m.M//2`

D

`m//2 , M//2`

Text Solution

Verified by Experts

The correct Answer is:
C
When we cut the bar magnet perpendicular to its length then pole strength is not affected. Magnetic moment is pole strength multiplied with the length of magnet, hence magnetic moment is halved due to half length.
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