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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2017
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Suppose the charge of a proton and an eleckon 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=1.67×1027kg]

(1)1020C(2)1023C(3)1037C(4)1047C

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