AP EAMCET · PHYSICS · Atomic Physics
Energy levels \(A, B\) and \(C\) of a certain atom corresponding to increasing values of energy i.e. \(E_A \lt E_B \lt E_C\). If \(\lambda_1\), \(\lambda_2 \& \lambda_3\) are the wavelengths of a photon corresponding to the transitions shown, then

- A \(\lambda_3=\lambda_1+\lambda_2\)
- B \(\lambda_3=\frac{\left(\lambda_1+\lambda_2\right)}{\lambda_1 \lambda_2}\)
- C \(\lambda_3^2=\lambda_1^2+\lambda_2^2\)
- D \(\lambda_3=\frac{\lambda_1 \lambda_2}{\left(\lambda_1+\lambda_2\right)}\)
Answer & Solution
Correct Answer
(D) \(\lambda_3=\frac{\lambda_1 \lambda_2}{\left(\lambda_1+\lambda_2\right)}\)
Step-by-step Solution
Detailed explanation
\(\left(E_C-E_A\right)=\left(E_C-E_B\right)+\left(E_B-E_A\right)\)…
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