Q. The velocity of electron in first orbit of H-atoms as compared to the velocity of light is
A) $\frac{1}{10}th$
B) $\frac{1}{100}th$
C) $\frac{1}{1000}th$
D) Same
Explanation
(b)
Velocity of an electron in first orbit of H atom is
$u = \frac{2.1847 \times 10^{8}}{1}cms^{- 1}$
Hence, it is $\frac{1}{100}$th as compared to the velocity of light.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.