1.

Suppose the charge of a proton and an electron differ slightly. One of them is - e, the other is (e + Deltae). 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 Deltae is of the order of [Given mass of hydrogen m = 1.67 xx 10^(-27)kg]

Answer»

`10^(-47)C`
`10^(-20)C`
`10^(-23)C`
`10^(-37)C`

Answer :C


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