AP EAMCET · PHYSICS · Atomic Physics
The speed of the electron is a hydrogen atom in the \(n=3\) level is \(\left(\right.\) Plank constant \(\left.=6.6 \times 10^{-34} \mathrm{JS}\right)\)
- A \(6.2 \times 10^5 \mathrm{~ms}^{-1}\)
- B \(3.7 \times 10^5 \mathrm{~ms}^{-1}\)
- C \(7.3 \times 10^5 \mathrm{~ms}^{-1}\)
- D \(1.6 \times 10^5 \mathrm{~ms}^{-1}\)
Answer & Solution
Correct Answer
(C) \(7.3 \times 10^5 \mathrm{~ms}^{-1}\)
Step-by-step Solution
Detailed explanation
In hydrogen atom, \(\mathrm{n}=3\) \(\therefore \quad \mathrm{V}_3=2.18 \times 10^6 \times \frac{1}{3}=7.3 \times 10^5 \mathrm{~ms}^{-1}\)
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