question_answer 89)

  The value of magnetic moment is zero in the case of antiferromagnetic substances because the domains.............. (a) get oriented in the direction of the applied magnetic field (b) get oriented opposite to the direction of the applied magnetic field (c) are oppositely oriented with respect to each other without the application of magnetic field (d) cancel out each other's magnetic moment

Answer:

                  (c, d) In the case of antiferromagnetic substances, the magnetic moment becomes zero because the domains are oppositely oriented with respect to each other without the application of magnetic field which cancel out each other.