Q. The time taken by an electron to go from ground state to excited state is one shake (one shake = $10^{- 8}$s). this time in nanosecond will be
A) 10 ns
B) 4 ns
C) 2 ns
D) 25 ns
Explanation
$n_{1}u_{1} = n_{2}u_{2}$ $n_{2} = \frac{1\ shake}{1\ ns}$ $= \frac{10^{- 8}s}{10^{- 9}s}$ $\therefore\ \ n_{2} = 10$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.