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A short bar magnet has a magnetic moment of 10 `Am^(2)`.If its length is 10 cm,then the pole strength of the dipole is

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A short bar magnet has a magnetic moment of 10 `Am^(2)`.If its length is 10 cm,then the pole strength of the dipole is
A. 200 Am
B. 100 Am
C. 150 Am
D. 50 Am
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Correct Answer - B
M=2l m
`thereforem=(m)/(2l)=(10)/(10xx10^(-2))=100 Am`
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