NEET2017Physics-Electrostatics
NEET 2017 Physics Coulomb's Law MCQ Question
Type: MCQ-numerical-Hard-Class 12
Suppose the charge of a proton and an electron differ slightly. One of them is –e, the other is (e + Δe). If the net of electrostatic force and gravitational force between two hydrogen atoms placed at a distance d (much greater than atomic size) apart is zero, then Δe is of the order of [Given mass of hydrogen mₕ = 1.67 × 10⁻²⁷ kg]
A
10⁻²³ C
B
10⁻³⁷ C
C
10⁻⁴⁷ C
D
10⁻²⁹ C
Correct Answer
Option B
Detailed Explanation
Balancing the electrostatic and gravitational forces gives the order of Δe by equating the forces and solving for Δe.
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