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