A paramagnetic sample shows a net magnetisation of 
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 magnetisation will be
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Here, 
,
Then, for paramagnetic materials,
Magnetisation 
(Curie's law)
Now, in the first case, 
…(i)
and in the second case, 
…(ii)
Dividing equation (i) by (ii), we get
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