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Question
Two protons are kept at a separation of 10 nm. Let Fn and Fe be the nuclear force and the electromagnetic force between them.
Options
Fe = Fn
Fe >> Fn
Fe << Fn
Fe and Fn differ only slightly.
Solution
Fe >> Fn
Two protons exert strong attractive nuclear force and repulsive electrostatic force on each other. Nuclear forces are short range forces existing in the range of a few fms. Therefore, at a separation of 10 nm, the electromagnetic force is greater than the nuclear force, i.e. Fe >> Fn.
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