Two similar moments P and Q each of magnetic moment M are taken. If P is cut along its axial line and Q is cut along its equatorial line all the four pieces obtained have each of

Options

A. Equal pole strength
B. Magnetic moment M/4
C. Magnetic moment M/2
D. Magnetic moment M

Answer

C

Explanation

If P is cut along its axial line, then length remains same but pole strength becomes half.
So, New magnetic moment=`M/2`
When Q is cut along its equatorial line, then length of the magnet becomes half but pole strength remains same
So, new magnet moment =`M/2`
Magnetic moment of each piece=`M/2`