TS EAMCET · Physics · Atomic Physics
Considering the Bohr's model of hydrogen atom, the ratio of velocities of electrons orbiting in the \(4^{\text {th }}\) orbit to that in the \(9^{\text {th }}\) orbit is
- A 9 : 4
- B 3 : 2
- C 2 : 3
- D 4 : 9
Answer & Solution
Correct Answer
(A) 9 : 4
Step-by-step Solution
Detailed explanation
\(\mathrm{V} \propto \frac{1}{\mathrm{n}} \quad\left[\because \mathrm{V}=\frac{2.18 \times 10^6}{\mathrm{n}}\right]\) \(\Rightarrow \quad \frac{\mathrm{V}_4}{\mathrm{~V}_9}=\frac{9}{4}\)
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