A) only potential energy
B) only kinetic energy
C) neither potential energy nor kinetic energy
D) both kinetic and potential energy
Correct Answer: D
Solution :
In the atom the revolving electron contains kinetic and potential energy both Kinetic energy, \[{{E}_{k}}=\frac{1}{2}m{{v}^{2}}=\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Z{{e}^{2}}}{2r}\] Potential energy, \[U=\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Ze(-e)}{r}\] \[=\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Z{{e}^{2}}}{r}\]
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