Question

distance of closest approach formula​

Answer 1

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If the momentum of the alpha-particle is 2p, the corresponding distance of closest approach is (1) 4r (2) 2r (3) 2/r (4) r/4. All of the kinetic energy of incident particles is converted to the potential energy of the system at the distance of closest approach.

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Answer 2

If the momentum of the alpha particles is 2p,the corresponding distance of closing approach is (1) 4r (2) 2r (3)2/r (4) r/4 .All of the kinetic energy of incident particles is converted to the potential energy of the system at the distance of closest approach