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Question: Answered & Verified by Expert
The wavelength of an electron for transition from a state $n_{1}$ to $n_{2}$ is $\frac{9}{8 R}$. Which of the following wavelengths is possible for a transition from $\mathrm{n}_{2}$ to $\mathrm{n}_{1}$
PhysicsAtomic PhysicsVITEEEVITEEE 2016
Options:
  • A $\frac{16}{15 \mathrm{R}}$
  • B $\frac{4}{3 R}$
  • C $\frac{9}{8 \mathrm{R}}$
  • D $\frac{36}{5 R}$
Solution:
2147 Upvotes Verified Answer
The correct answer is: $\frac{9}{8 \mathrm{R}}$
Energy released in transition from state $\mathrm{n}_{1}$ to $\mathrm{n}_{2}$ is equal to the energy absorbed in transistion from state $\mathrm{n}_{2}$ to $\mathrm{n}_{1}$.

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