Let E_ n = -m e^ 4 8 _ 0 ^ 2 n^ 2 h^ 2 be the energy of the n th level of H-atom. If all…
Physics · Class 12 · CBSE — Atoms
Let \(E_{n}=\frac{-m e^{4}}{8 \varepsilon_{0}^{2} n^{2} h^{2}}\)be the energy of the nth level of H-atom. If all the H-atoms are in the ground state and radiation of frequency (E2 – E1)/h falls on it, then
- it will not be absorbed at all
- some of atoms will move to the first excited state
- all atoms will be excited to the n = 2 state
- all atoms will make a transition to the n = 3 state
Answer
(B) some of atoms will move to the first excited state
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