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The magnetic moment of a short dipole is...

The magnetic moment of a short dipole is `1 A m^(2)`.What is the magnitude of the magnetic induction in air at `10 cm` from centre of the dipole on a line making an angle of `30^(@)` from the axis of the dipole?

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The correct Answer is:
A, B, C, D
`B_(P)=(mu_(0))/(4pi)M/d^(3)sqrt(1+3cos^(2)theta)=sqrt13/2xx10^(-4) wb//m^(2)`
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