MCQ
When a hydrogen atom is raised from the ground state to an excited state
- ✓$P.E.$ increases and $K.E.$ decreases
- B$P.E.$ decreases and $K.E.$ increases
- CBoth kinetic energy and potential energy increase
- DBoth $K.E.$ and $P.E.$ decrease
✓
Answer
Correct option: A.
$P.E.$ increases and $K.E.$ decreases
a
(a) $P.E.$ $ \propto - \frac{1}{r}$ and $K.E.$ $ \propto \frac{1}{r}$
As $r$ increases so $K.E.$ decreases but $P.E.$ increases.
(a) $P.E.$ $ \propto - \frac{1}{r}$ and $K.E.$ $ \propto \frac{1}{r}$
As $r$ increases so $K.E.$ decreases but $P.E.$ increases.
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