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Question

If Fpp,Fnn and Fpn denote, respectively, the nuclear forces between two protons, between two neutrons and between a proton and a neutron, then

A
Fpp=Fnn=Fpn
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B
FppFnnFpn
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C
Fpp=FpnFnn
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D
Fnn=FpnFpp
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Solution

The correct option is D Fnn=FpnFpp
Given Fnn= Force between two neutrons. FPp= Force between two protons. Fpn= Force between neutron and proton.

Since, neutron is a neutral particle having no net charge. Hence, the force between neutron-neutron and neutron-proton is equal. A proton is a charged particle, and when two protons tends to approach, the electrostatic forces repel them and decreases the proton-proton force.

Fpp<FPn=Fnn or FppFpn=Fnn Hence, option (d) is correct.

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