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Points A and B are situated perpendicula...

Points A and B are situated perpendicular to the axis of a 2cm long bar magnet at large distances X and 3X from its centre on opposite sides. The ratio of the magnetic fields at A and B will be approximately equal to

A

`2:9`

B

`1:9`

C

`27:1`

D

`9:1`

Text Solution

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The correct Answer is:
C
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AAKASH INSTITUTE ENGLISH-MAGNETISM AND MATTER -ASSIGNMENT (SECTION A)
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  11. A thin magnetic needle oscillates in a horizontal plane with a period ...

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  12. The time period of a freely suspended magnet is 4 secs. If it is broke...

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