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Q.

The force between two poles is reduced to ‘x’ newtons when their original separation is increased ‘n’ times, it is increased to ‘y’ newtons when their separation is made  1nth of their original value. The relation between ‘x’ and ‘y’ is

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a

y = nx

b

y = n2x

c

y = n3x

d

y = n4x

answer is D.

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Detailed Solution

SO, ⇒x=C.1nr2→1Ca  constanty=C.1rn2⇒y=n2   C/r2→2xy=1n4⇒y=n4x
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