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A bar magnet 30cm long is placed in magn...

A bar magnet `30cm` long is placed in magnetic meridian with its north pole pointing south. The neutral point is observed at a distance of `30cm` from its centre. Calculate the pole strength of the magnet. Given horizontal component of earth's field is `0*34G`.

A

4.3 Am

B

5.2 Am

C

6.9 Am

D

8.6 Am

Text Solution

Verified by Experts

The correct Answer is:
D
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