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There are 2.0 × 10 24 molecular dipoles in a paramagnetic salt. Each has dipole moment 1.5 × 10 - 23 A m 2 . Find maximum (saturation) magnetization in the specimen.

Options

  1. A20 A m 2
  2. B30 A m 2
  3. C200 A m 2
  4. D50 A m 2

Correct answer

B. 30 A m 2

Step-by-step solution

Maximum magnetization M = μ × n o .   o f   a t o m s u n i t   v o l u m e = 1.5 × 10 - 23 A m 2 × 2 × 10 24 = 30   A m 2

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