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Two physical quantities are represented by `P` and `Q`. The dimensions of their product is `[M^(2) L^(-4) T^(-4) I^(-1)]` and dimensions of their ratio is `[I^(-1)]`. Then `P` and `Q` dimensional formula respectively are

A

magnetic flux and Torque acting on a magnet.

B

torque and Magnetic flux

C

magnetic moment and Pole strength

D

magnetic moment and Magneitc permeability

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The correct Answer is:
A
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