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Magnetic Properties of Matter question

2024 · 8 Apr · Shift 1 · Q71
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  5. /2024 · 8 Apr · Shift 1 · Q71

Magnetic Properties of Matter question

2024 · 8 Apr · Shift 1 · Q71

JEE MainPhysicsMagnetic Properties of MatterMCQ+4 / −1
Paramagnetic substances: A. align themselves along the directions of external magnetic field. B. attract strongly towards external magnetic field. C. has susceptibility little more than zero. D. move from a region of strong magnetic field to weak magnetic field. Choose the most appropriate answer from the options given below:
  1. A
    A, B, C Only
  2. B
    A, C Only
  3. C
    A, B, C, D
  4. D
    B, D Only
View written solutionFree

Correct answer: B

  1. Key properties of paramagnetic substances

    Paramagnetic substances have:

    • small positive magnetic susceptibility: χm>0\chi_m > 0χm​>0 and very close to zero.
    • tendency to get weakly magnetized in the direction of the external magnetic field.
    • tendency to move toward the stronger field region in a non-uniform magnetic field.

  2. Evaluate each statement

    A. align themselves along the directions of external magnetic field.
    This is true. Paramagnetic dipoles tend to align with the applied magnetic field.

    B. attract strongly towards external magnetic field.
    This is false. Paramagnetic substances are attracted weakly, not strongly.

    C. has susceptibility little more than zero.
    This is true. For paramagnetic substances, magnetic susceptibility is small and positive: χm is small and >0\chi_m \text{ is small and } > 0χm​ is small and >0

    D. move from a region of strong magnetic field to weak magnetic field.
    This is false. Paramagnetic substances move from weak field to strong field.

  3. Correct combination

    True statements are: A and C onlyA \text{ and } C \text{ only}A and C only

  4. Matching with given options

    Option B corresponds to A, C Only.

Therefore, the correct answer is Option B.

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