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A perfectly diamagnetic sphere has a small spherical cavity at its centre, which is filled with a paramagnetic substance. The whole system is placed in a uniform magnetic field $\vec{B}$ . Then the field inside the paramagnetic substance is :

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B→

much large than B→ but opposite to B→

much large than B→ and parallel to B→

zero

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detailed solution

Correct option is D

Diamagnetic substances does not allow any magnetic field lines to pass through them. Therefore magnetic field inside it must be zero

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A perfectly diamagnetic sphere has a small spherical cavity at its centre, which is filled with a paramagnetic substance. The whole system is placed in a uniform magnetic field B→. Then the field inside the paramagnetic substance is :

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Ready to Test Your Skills?

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A perfectly diamagnetic sphere has a small spherical cavity at its centre, which is filled with a paramagnetic substance. The whole system is placed in a uniform magnetic field $\vec{B}$ . Then the field inside the paramagnetic substance is :