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The magnetic induction at a point distan...

The magnetic induction at a point distant 15 cm on the axis of a short bar magnet of moment 0.5 A m is

A

`3 xx 10^(-5)Wb//m^(2)`

B

`3 xx 10^(-8)Wb//m^(2)`

C

`3 xx 10^(-11)Wb//m^(2)`

D

`4 xx 10^(-5)Wb//m^(2)`

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The correct Answer is:
A
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