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JEE Main 201212 MayOnline
Exam
JEE Main
Year
2012
Date
12 May
Mode
Online
Subject
Physics
Chapter
Atomic Physics

JEE Main 2012 · 12 May · Online · Physics · Atomic Physics

A hypothetical atom has only three energy levels. The ground level...

A hypothetical atom has only three energy levels. The ground level has energy, E1=−8eVE_1=-8 \mathrm{eV}. The two excited states have energies, E2=−6eVE_2=-6 \mathrm{eV} and E3=−2eVE_3=-2 \mathrm{eV}. Then which of the following wavelengths will not be present in the emission spectrum of this atom?

Options

  1. A207 nm207 \mathrm{~nm}
  2. B465 nm465 \mathrm{~nm}
  3. C310 nm310 \mathrm{~nm}
  4. D620 nm620 \mathrm{~nm}

Correct answer

B. 465 nm465 \mathrm{~nm}

Step-by-step solution

E=hcλE=\frac{h c}{\lambda}
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