CBSE Class 12 Physics 2023 Outside Delhi Set 1 Paper

Question : 16

Total: 35

Assertion (A): Diamagnetic substances exhibit magnetism.
Reason (R): Diamagnetic materials do not have permanent magnetic dipole moment.

Both Assertion (A) and Reason (R) are true and Reason ( R ) is the correct explanation of Assertion (A).
Both Assertion (A) and Reason (R) are true and Reason (R) is NOT the correct explanation of Assertion (A).
Assertion (A) is true and Reason (R) is false.
Assertion (A) is false and Reason (R) is also false.

Solution: 👈: Video Solution

The assertion is true. Diamagnetic substance shows faint repulsion. It is a property of magnetism. So, assertion is true.
The above property is observed in the substances which have even number of electrons in each atom/molecule. Electrons with opposite spins form pairs and so no net dipole moment is generated. Diamagnetic substances are such substances and hence exhibit the above magnetic property. So, the reason is true it explains the assertion.

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