If m is mass of electron, v its velocity, r the radius of stationary circular orbit…
Physics · JEE Advanced · NTA Exams — Atoms and Nuclei
If m is mass of electron, v its velocity, r the radius of stationary circular orbit around a nucleus with charge Ze, then from Bohr’s first postulate, the kinetic energy \(\mathrm{K}=\frac{1}{2} \mathbf{m}^{2}\)of the electron in C.G.S. system is equal to
- \(\frac{1}{2} \frac{Z^{2}}{r}\)
- \(\frac{1}{2} \frac{Z^{2}}{r^{2}}\)
- \(\frac{Z^{2}}{r}\)
- \(\frac{z}{r^{2}}\)
Answer
(A) 1 2 Z^ 2 r
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