What happens to the force between magnetic poles when their pole strength and the distance between them are both doubled

Force increases to two times the previous value

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No change

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Force decreases to half the previous value

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Force increases to four times the previous value

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Solution

The correct option is B No change
$F \propto \frac{m_{1} m_{2}}{r^{2}}$

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What happens to the force between magnetic poles when their pole strength and the distance between them are both doubled

The correct option is B No change F∝m1m2r2

The correct option is B No change
$F \propto \frac{m_{1} m_{2}}{r^{2}}$