Q80 / 90 · JEE Main 2023 (10 Apr Shift 2) · Physics

Given below are two statements:

Statement I: For diamagnetic substance -1≤x<0, where x is the magnetic susceptibility.

Statement II: Diamagnetic substance when placed in an external magnetic field, tend to move from stronger to weaker part of the field. In the light of the above statements, choose the correct answer from the options give below.

  • A
    Both Statement I and Statement II are False
  • B
    Statement I is correct but Statement II is false
  • C
    Statement I is incorrect but Statement II is true
  • Correct answer
    D
    Both Statement I and Statement II are true

Solution

There are no atomic dipoles in diamagnetic materials because the resultant magnetic moment of each atom is zero due to paired electrons. Diamagnetic materials are repelled by a magnet. These substances are weakly repelled by the field, so in a nonuniform field, these substances have a tendency to move from a strong to a weak part of the external magnetic field.

For diamagnetic substance (-1<x<0) and a diamagnetic substance is repelled by the magnetic field.

Hence, the correct answer is option: 'D'.

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