Magnetism Question 292
Question: If the susceptibility of dia, para and ferromagnetic materials are $ {\chi _{d,,}},{\chi _{p,}},{\chi _{f}} $ respectively, then
Options:
A) $ {\chi _{d}}<{\chi _{p}}<{\chi _{f}} $
B) $ {\chi _{d}}<{\chi _{f}}<{\chi _{p}} $
C) $ {\chi _{f}}<{\chi _{d}}<{\chi _{p}} $
D) $ {\chi _{f}}<{\chi _{p}}<{\chi _{d}} $
Show Answer
Answer:
Correct Answer: A
Solution:
[a] $ {\chi _{d}}<{\chi _{p}}<{\chi _{f}} $ For diamagnetic substance $ {\chi _{d}} $ is small n negative $ ({{10}^{-5}}) $ For paramagnetic substances $ {\chi _{p}} $ is small and positive $ ({{10}^{-3}},to,{{10}^{-5}}) $ For ferromagnetic substances $ {\chi _{f}} $ is very large $ (10^{3},to,10^{5}) $
BETA
