Answer to Question #241111 in Optics for hassan ihtisham

Question #241111
a photon of wavelength 12.7 xi 5 m-1 is eminded when it jump from higher to n= 1, what will be higher orbit

a)n=5
b)n=2
c)n=3
d)n=4
1
Expert's answer
2021-09-27T14:13:26-0400

1λ=R(1121n2),    \frac 1{\lambda}=R(\frac 1{1^2}-\frac{1}{n^2}),\implies

n=111λR=2n=\frac 1{\sqrt{1-\frac1{\lambda R}}}=2 (ans. b).


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