An `alpha`-particle having `K.E. =7.7MeV` is scattered by gold `(z=79)` nucleus through `180^(@)` Find distance of closet approach.

An alpha -particle having kinetic energy of 7.5 MeV is scattered by gold (Z=79) mucleus through 180^(@) . Calculate the distance of closest approach.

An alpha -particle of energy 10 meV is scattered through 180^(@) by a fixed uranium nucleus. The distance of the closest approach is of the order of

An alpha particle of energy 5 MeV is scattered through 180^(@) by a fixed uranium nucleus. The distance of the closest approach is of the order of ........

An alpha particle of energy 5 MeV is scattered through 180^(@) by a found uramiam nucleus . The distance of closest approach is of the order of