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Each atom of an iron bar (5cmxx1cmxx1cm)...

Each atom of an iron bar `(5cmxx1cmxx1cm)` has a magnetic moment `1.8xx10^(-23) Am^(2)` Knowing that the density of iron is `7.78xx10^(3) kg^(-3)m` atomic weight is `56` and Avogadro's number is `6.02xx10^(23)` the magnetic moment of bar in the state of magnetic saturation will be

A

`4.75 Am^(2)`

B

`5.74 Am^(2)`

C

`7.54 Am^(2)`

D

`75.4 Am^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
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