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A very small magnet is placed in the mag...

A very small magnet is placed in the magnetic meridian with its S pole pointing north the null point is obtained 20cm away from the centre of the magnet what is the magnetic moment of the magnet if earth's field is `0.3xx10^(-4)T`?

A

`0.2A-m^2`

B

`12A-m^2`

C

`1.2A-m^2`

D

`2.4A-m^2`

Text Solution

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The correct Answer is:
C
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