AP EAMCET · PHYSICS · Atomic Physics
Ionisation potential of hydrogen atom is \(13.6 \mathrm{eV}\). When hydrogen atoms in ground state are excited by a supply of \(12.1 \mathrm{eV}\), then the number of spectral lines emitted by hydrogen atoms according to Bohr's theory is
- A \(2\)
- B \(3\)
- C \(1\)
- D \(4\)
Answer & Solution
Correct Answer
(B) \(3\)
Step-by-step Solution
Detailed explanation
Given that, ionisation potential of hydrogen atom, \(E_1=-13.6 \mathrm{eV}\) Energy supplied = Energy absorbed by hydrogen atom. \(\Delta E=12.1 \mathrm{eV}\) i.e. final energy of excited state, \(E_2=\frac{-13.6 \mathrm{eV}}{n^2}\) We know that, \(E_2-E_1=\Delta E\)…
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