Magnetism Question 285
Question: At a temperatur of $ 30{}^\circ C $ , the susceptibility of a ferromagnetic material is found to be X. Its susceptibility at $ 333{}^\circ C $ is
Options:
A) $ \chi $
B) $ 0.5\chi $
C) $ 2\chi $
D) $ 11.1\chi $
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Answer:
Correct Answer: B
Solution:
[b] $ \frac{{\chi _{m _{1}}}}{{\chi _{m _{2}}}}=\frac{T _{2}}{T _{1}}=\frac{273+333}{273+30}=\frac{606}{303}=2 $
$ \
Therefore ,,,,{\chi _{m _{2}}}={\chi _{m _{1}}}/2=0.5{\chi _{m _{1}}}=0.5\chi .(\because ,{\chi _{m _{1}}}=\chi ) $
BETA
