Solveeit Logo
Login

Question

Question: An a-particle of 10 MeV energy collides head on with a copper nucleus (Z = 29) and returns on its or...

An a-particle of 10 MeV energy collides head on with a copper nucleus (Z = 29) and returns on its original way. The size of nucleus is-

A

0.84 × 10–14 m

B

1.2 × 10–14 m

C

10–15 m

D

0.84 × 10–15 m

Answer

0.84 × 10–14 m

Explanation

Solution

12\frac{1}{2} mv2 = 9×109(Ze)(Ze)r\frac{9 \times 10^{9}(Ze)(Ze)}{r}