A.T.Q, we have, FGFe2.4×1039=r2Gm1m24πε01r2q1q2=GK×(9.1×10−31×1.67×10−22)(1.6×10−19)2[∵K=4πε01] Hence, GK=1.6×10−19×1.6×10−192.4×1039×9.1×10−31×1.67×10−27=14.247×1019=1.4247×1020≈1020
The ratio of coulomb's electrostatic force to the gravitational force between an electron and a proton separated by some distance is 2.4 × 10^39. The…
NEET UG 2022 — Physics Electromagnetism
2022mcqhard
The ratio of coulomb's electrostatic force to the gravitational force between an electron and a proton separated by some distance is 2.4×1039. The ratio of the proportionality constant, K= 4πε01 to the Gravitational constant G is nearly (Given that the charge of the proton and electron each =1.6×10−19C, the mass of the electron =9.11×10−31 kg, the mass of the proton = 1.67×10−27 kg)
Official previous-year question
Held on 30 Apr 2022 · Verified 9 Jul 2026.
Options
- A
1020
- B
1030
- C
1040
- D
10
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