Q 12-12-013NEETJEE MainMedium
The ratio of kinetic energy to total energy of an electron in a Bohr orbit is
Answer: (B) $-1$
Concept. In every Bohr orbit $U = -2K$, so $E = K + U = -K$.
Step 1. Ratio.
$$\frac{K}{E} = \frac{K}{-K} = -1$$
Answer. $-1$ (Option B).
Solution by Sreeraj P, M.Sc Physics