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Question

When a bar magnet of magnetic moment ¯¯¯¯¯¯M is placed in a magnetic field of induction field strength ¯¯¯¯B, each pole experiences a force of ¯¯¯¯F then the distance between the South and North pole of the magnet measured inside it is :


A
MBF
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B
MBF
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C
FMB
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D
FBM
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Solution

The correct option is A MBF
As in the figure , Torque=F×asinθ
Torque=M×Bsinθ
a=MBF
12438_13529_ans.PNG

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