Magnetism Question 281
Question: The magnetic susceptibility of a paramagnetic substances at $ -73{}^\circ ,C $ is 0.0060, then its value at - $ 173{}^\circ C $ will be
Options:
A) 0.0030
B) 0.0120
C) 0.0180
D) 0.0045
Show Answer
Answer:
Correct Answer: B
Solution:
[b] As magnetic susceptibility $ {\chi _{m}}\propto \frac{1}{T} $ ,
Therefore $ \frac{{\chi _{2}}}{{\chi _{1}}}=\frac{T _{1}}{T _{2}}\Rightarrow \frac{{\chi _{2}}}{0.0060}=\frac{273-73}{273-173}=\frac{200}{100}=2 $
$ {\chi _{2}}=2\times 0.0060=0.0120 $
BETA
