A paramagnetic sample shows a net magnetization of 8 A m^-1 when placed in an external magnetic field of 0.6 T at a temperature of 4 K. When the same sample is placed in an external magnetic field of…

Question

A paramagnetic sample shows a net magnetization of 8 A m^-1 when placed in an external magnetic field of 0.6 T at a temperature of 4 K. When the same sample is placed in an external magnetic field of 0.2 T at a temperature of 16 K. The magnetization will be

Accepted Answer

Correct answer: D. (d) Given, M_1= 8 Am ,B_1=0.6 T ,T_1=4 K, B_2=0.2 T ,T_2=16 K From Curie's law, M=C BT ∴ M_1M_2= B_1B_2 T_2T_1 ⇒M_2= B_2B_1 T_1T_2 M_1 ⇒M_2= 0.20.6 416 8= 23 A m^-1

$A paramagnetic sample shows a net magnetization of 8 A m^{- 1} when placed in an external magnetic field of 0.6 T at a temperature of 4 K . When the same sample is placed in an external magnetic field of 0.2 T at a temperature of 16 K . The magnetization will be$

Solution

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