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JEE Main · 2022 · 25 Jun 2022 · Shift 2 · Magnetic Properties of Matter

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Given below are two statements:

Statement-I: Susceptibilities of paramagnetic and ferromagnetic substances increase with decrease in temperature.
Statement - II: Diamagnetism is a result of orbital motions of electrons developing magnetic moments opposite to the applied magnetic field.
Choose the CORRECT answer from the options given below :-
  1. (A)Both statement - I and statement -II are true.✓ Correct
  2. (B)Both statement - I and Statement - II are false.
  3. (C)Statement - I is true but statement - II is false.
  4. (D)Statement-I is false but Statement-II is true.

Answer: (A)

Solution

Statement I is true: According to Curie's law, magnetic susceptibility for paramagnets (and for ferromagnets), so susceptibility increases as temperature decreases. Statement II is also true: Diamagnetism arises from the orbital motion of electrons creating induced magnetic moments that oppose the applied field. Both statements are correct.

JEE Main · 2022 · 25 Jun 2022 · Shift 2 · Single correct option

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