Question
Q.2 Calculate the frequency of the photon emitted by a hydrogen atom making a transition from 4 ts n-3 state Compare your resuhs with the frequency of revolltion for the eectron in these two states A beam of a particles with ised kinetic energy is incident on Aa fcil (a) 1/200 a particles petr minule are desected at 10', how many will be detected st 30 and 502(b) Ifthe kinetic energy is ofthe incident particles ia haheL how many scattered aparticles will be observed at lon Q. 3 Q.4 In am experiment similar so Thomsons, we use deflecting plates S em in lergth with andlectric with magnetic fielt of 8 10 T we find ne deflection. What is the intial velocity of he Q.5 Calculate x ,spp ,Ax and Ap, for the greend state of the afine sqarewell Check hir ter mrinerisipk xapuited de B moving w (b) Compute de Beuglie wave lergth (c) Compute de roglie wave kengith of a ball of mass 0.20k d velocity 35 m for an electron with kinetic energy 50 cV and 50
Explanation / Answer
debroglie wave length(l)= h/p ; p-momentum and h-planck's constant
a) proton momentum(p)= Y*mv ; m-rest mass and Y-lorentz factor
Y= 1/sqrt(1-v2/c2 ) here v=106 ; Y=300
l= 1.32 x 10-15 m
b) kinetic energy(E)= mv2/2 =p2/2m ; p=sqrt(2mE) =3.82 x 10-24
l= 1.74 x 10-10 m
for 50 keV; p= 1.2 x 10-22
l=5.488 x 10-12 m
c)p =mv=7
l=9.47 x 10-35 m
