Q. When a hydrogen atom is raised from the ground state to an excited state
A) P.E. increases and K.E. decreases
B) P.E. decreases and K.E. increases
C) Both kinetic energy and potential energy increase
D) Both K.E. and P.E. decrease
Explanation
(a) $P.E. \propto - \frac{1}{r}$ and $K.E. \propto \frac{1}{r}$
As $r$ increases $K.E.$ decreases but $P.E.$ increases
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.