A) \[8.3\times {{10}^{6}}\]
B) 3.0
C) \[1.2\times {{10}^{-7}}\]
D) \[3\times {{10}^{-6}}\]
Correct Answer: B
Solution :
The intensity of magnetization \[I=\frac{M}{V}=\frac{M}{mass\text{ }/\text{ }density}\] Given, mass\[=1\text{ }g={{10}^{-3}}kg\] and density\[=5g/c{{m}^{2}}\] \[=\frac{5\times {{10}^{-3}}kg}{{{({{10}^{-2}})}^{3}}{{m}^{3}}}\] \[=5\times {{10}^{3}}kg/{{m}^{3}}\] \[I=\frac{6\times {{10}^{-7}}\times 5\times {{10}^{3}}}{{{10}^{-3}}}=3A/m\]
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