Suppose the charge of a proton and an electron differ slightly. One of them is -e, the other is (e + e). 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 e is of the order of [Given mass of hydrogen mh = 1.67 x 10-27 kg]
10-20 C
10-23 C
10-37 C
10-47 C
As we learnt in
Coulombic force -
- wherein
K - proportionality Constant
Q1 and Q2 are two Point charge
Charge on one hydrogen atoms
gravitational force between two hydrogen
2f force on the system is 2ro
Option 1)
10-20 C
Incorrect
Option 2)
10-23 C
Incorrect
Option 3)
10-37 C
Correct
Option 4)
10-47 C