JEE Mains · Physics · STD 12 - Magnetism and matter
- JEE Mains 2023
- Medium
- MCQ
Given below are two statements: Statement \(I\) : The diamagnetic property depends on temperature. Statement \(II\) : The included magnetic dipole moment in a diamagnetic sample is always opposite to the magnetizing field. In the light of given statement, choose the correct answer from the options given below:
Pick an option to check your answer.
Answer & Solution
Correct Answer
(A) Statement \(I\) is incorrect but Statement \(II\) is true.
Step-by-step Solution
Detailed explanation
Explanation:
Statement \( I \) is incorrect: Diamagnetism arises due to the orbital motion of electrons induced by an external magnetic field. This magnetic response is completely unaffected by thermal agitation, making the diamagnetic property independent of temperature.
Statement \( II \) is true: By definition and according to Lenz's law, when a diamagnetic material is exposed to an external magnetizing field, the induced magnetic dipole moment develops in a direction completely opposite to the applied field, causing the material to undergo a weak repulsion.
Therefore, Statement \( I \) is incorrect but Statement \( II \) is true, which corresponds to option A.
Statement \( I \) is incorrect: Diamagnetism arises due to the orbital motion of electrons induced by an external magnetic field. This magnetic response is completely unaffected by thermal agitation, making the diamagnetic property independent of temperature.
Statement \( II \) is true: By definition and according to Lenz's law, when a diamagnetic material is exposed to an external magnetizing field, the induced magnetic dipole moment develops in a direction completely opposite to the applied field, causing the material to undergo a weak repulsion.
Therefore, Statement \( I \) is incorrect but Statement \( II \) is true, which corresponds to option A.
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