Q 1258423304.     An alpha particle of energy `5` Me `V` is scattered through `180^°` by a fixed uranium nucleus. The distance-of closest approach is of the order of

JEE 1981
A

`10^(-10)` cm

B

`1 A^∘`

C

`10^(-15) ` cm

D

`10^(-12)` cm

HINT

Conservation of mechanical energy.
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