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Given below are two statements:
Statement I: The diamagnetic property depends on temperature.
Statement II: The induced magnetic dipole moment in a diamagnetic sample is always opposite to the magnetizing field.
In the light of given statements, choose the correct answer from the options given below.
Asked in JEE Main 12th April 1st Shift 2023 · Dia, para and ferromagnetism
- (1) Statement I is correct but Statement II is false.
- (2) Both Statement I and Statement II are false.
- (3) Both Statement I and Statement II are true.
- (4) Statement I is incorrect but Statement II is true.
Answer: (4) Statement I is incorrect but Statement II is true.
Step-by-step solution
Diamagnetic susceptibility is essentially independent of temperature: Statement I false.
The induced moment opposes the applied field (χ < 0): Statement II true.
Why the other options are wrong
- (1) Confuses diamagnetism with paramagnetism (Curie's law).
- (2) Forgets that the induced moment opposes the field.
- (3) Applies Curie's law to diamagnets.
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