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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2017
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Suppose the charge of a proton and an electron differ slightly. One of them is $– e$, the other is $(e + \Delta e)$. 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 $\Delta e$ is of the order of [Given mass of hydrogen $mh = 1.67 \times 10^{–27} kg$]


( A ) $10^{-23} C$
( B ) $10^{-47} C$
( C ) $10^{-20} C$
( D ) $10^{-37} C$

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