Physics · 2014
JEE Main · 9 April 2014, Shift 1 · Q19
The mid points of two small magnetic dipoles of length d in end-on positions, are separated by a distance x,(x ≫ d ). The force between them is…
The mid points of two small magnetic dipoles of length d in end-on positions, are separated by a distance $\displaystyle x,(x \gg \mathrm{~d})$. The force between them is proportional to $\displaystyle x^{-\mathrm{n}}$ where n is :
Official answer
(4)
$\displaystyle 4$
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JEE Main 2014 Physics question, with the answer from NTA’s final answer key. Where our answers come from.