Q. The ratio of areas within the electron orbits for the first excited state to the ground state for hydrogen atom is
A) 16 : 1
B) 18 : 1
C) 4 : 1
D) 2 : 1
Explanation
(a) $r_{n} \propto n^{2} \Rightarrow A_{n} \propto n^{4} \Rightarrow \frac{A_{1}}{A_{0}} = \left( \frac{2}{1} \right)^{4} = \frac{16}{1}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.