Q. The kinetic energy of electron in the first Bohr orbit of the hydrogen atom is
A) $- 6.5\ eV$
B) $- 27.2\ eV$
C) $13.6\ eV$
D) $- 13.6\ eV$
Explanation
(c) K.E. $= -$ (Total energy) $= - ( - 13.6\ eV) = + 13.6\ eV$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.