Theratio of the magnitude of the kinetic energy to the poten... | Physics | SolveeIt | Solveeit

Today, August 19

Question

Theratio of the magnitude of the kinetic energy to the potential energy of an electron in the 5th excited state of a hydrogen atom is:

A

4

B

$\frac{1}{4}$

C

$\frac{1}{2}$

D

1

Answer

$\frac{1}{2}$

Explanation

Solution

For an electron in a hydrogen atom (Bohr model):

$|PE| = 2 \times KE$

So,

$\frac{KE}{|PE|} = \frac{1}{2}$