Q. Magnitude of kinetic energy in an orbit is equal to
A) Half of the potential energy
B) Twice of the potential energy
C) One fourth of the potential energy
D) None of the above
Explanation
(a)
Kinetic energy in an orbit$= \frac{Ze^{2}}{8\pi E{^\circ}r}\ \ \ \ \ \ ...(i)$
Potential energy in an orbit $= \frac{Ze^{2}}{4\pi E{^\circ}r}\ \ \ \ldots(ii)$
Comparing Eqs. (i) and (ii)
$KE = \frac{1}{2}PE$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.