A neutron collies head-on with a station...

A neutron collies head-on with a stationary hydrogen atom in ground state. Which of the following statements is/are correct ?

(a)If kinetic energy of the neutron is less than `13.6 eV` collision must be elastic

(b)If kinetic enegfy of the neutron is less than `13.6 eV` collision must be inelastic

(c)Inelastic collision may be take place only when initial kinetic energy iof neutron is greater than `20.4 eV`

(d)Perfectly inelcastic collision can not take place

Verified by Experts

The correct Answer is:

A, C

`K ge 20.4 eV` for inelastic collision

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