When the hydrogen atom emits a photon in going from n=5 to n=1 state its recoil speed is nearly

Physics-

Experimentally, it is found that the average radius of a nucleus is given by

 Where 

and  A = mass number

Physics-General

Experimentally, it is found that the average radius of a nucleus is given by

 Where 

and  A = mass number

We know that momentum is given by equation

p= h/λ

Hydrogen atom emits photon during transition from n= 5 to n=1 

Substituting in equation (1) we get

This is the recoil speed of hydrogen atom. 

Answered by Expert 10th September 2018, 11:46 AM

Rate this answer

You have rated this answer /10