The dependence of nuclear force on distance between nucleons is not known precisely but approximate variation is shown graphically. It is also known that average separation between two nucleons in a nucleus is 1 fermi. Then choose the incorrect statement.

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Nuclear force is negligible when separation between nucleon is more than 10fermi

Nuclear force is attractive for separation more than 0.5 fermi

Nuclear force is attractive for separation less than 0.5 fermi

Nuclear force is repulsive for separation less than 0.5 fermi

answer is B.

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Detailed Solution

$i f r < 0.5,$ F is +ve, repulsive

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