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

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Equal pole strength

Magnetic moment M/4

Magnetic moment M/2

Magnetic moment M

answer is C.

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Detailed Solution

For P,
New pole strength=P/2

$μ_{1} = \frac{m}{2}$

For Q, New length =L/2

$∴ μ_{2} = \frac{m}{2}$

All the four pieces obtained have each of magnetic moment M/2.

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