Q. In previous question what is the minimum possible value of kinetic energy of the neutrons for this to be possible. The mass of neutron and proton can be assumed to be nearly same. Use .

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A

31.875 eV

B

63.75 eV

C

127.5 eV

D

182.5 eV

Solution:

Let be the speed of neutron before collision

At end of the deformation phase (when the kinetic energy of (neutron + ) system is least)

Where is velocity of centre of mass. From conservation of momentum

The loss of kinetic energy

It is the kinetic energy of neutron then the maximum loss in K.E. of system is

or

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1. The transition from the state to in a hydrogen like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition from

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(A) Radius of the muonic orbit is times smaller than that of the electron.
(B) The speed of the in the orbit is times that of the electron in the orbit.
(C) The ionization energy of muonic atom is times more than that of an hydrogen atom.
(D) The momentum of the muon in the orbit is times more than that of the electron.

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