A) attractive only
B) repulsive only
C) attractive or repulsive depending upon separation between the nucleons
D) neither attractive nor repulsive
Correct Answer: C
Solution :
The nuclear force is the force between two or more nucleons. At typical nucleon separation (1.3 fm) it is a very strong attractive force (104 N). At much smaller separation between nucleons the force is very powerful repulsive, which keeps the nucleons at a certain average separation. Beyond about 1.3 fm separation the force exponentially dies off to zero.
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