Q 12-01-048JEE MainJEE Main 2024 (5 Apr, Shift 1)Easy
In a hydrogen-like system, the ratio of the Coulombian force and the gravitational force between an electron and a proton is of the order of
Answer: (A) $10^{39}$
$$\frac{F_e}{F_g} = \frac{ke^2}{Gm_em_p} = \frac{9\times10^9\times(1.6\times10^{-19})^2}{6.67\times10^{-11}\times9.1\times10^{-31}\times1.67\times10^{-27}} \approx 2.3\times10^{39}$$
The order is $10^{39}$.
Solution by Sreeraj P, M.Sc Physics