QNEET-2022-Ph-525: NEET 2022 Physics - Class 12 NEET-2022-Ph-525 Solution: The ratio of Coulomb's electrostatic force to the gravitational …

The ratio of Coulomb's electrostatic force to the gravitational force between an electron and a proton separated by some distance is $2.4 \times 10^{39}$. The ratio of the proportionality constant $K = \frac{1}{4\pi\epsilon_0}$ to the gravitational constant G is nearly (Given that the charge of the proton and electron each = $1.6 \times 10^{-19}\ \text{C}$ the mass of the electron = $9.11 \times 10^{-31}\ \text{kg}$ the mass of the proton = $1.67 \times 10^{-27}\ \text{kg}$): 10 $10^{20}$ $10^{30}$ $10^{40}$