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NEET Sample Paper NEET Sample Test Paper-27

  • question_answer
    Two nucleons are at a separation of 1 fermi. The net force between them is \[{{f}_{1}}\] if both are neutrons, \[{{f}_{2}}\]  if  both are protons, and fg if one is a proton and the other is a neutron, then

    A)  \[{{f}_{1}}>{{f}_{2}}>{{f}_{3}}\]                    

    B)  \[{{f}_{2}}>{{f}_{1}}>{{f}_{3}}\]

    C)  \[{{f}_{1}}={{f}_{3}}>{{f}_{2}}\]                    

    D)  \[{{f}_{1}}={{f}_{2}}>{{f}_{3}}\]

    Correct Answer: C

    Solution :

    The attractive nuclear force is the same for any pair of nucleons. Hence \[{{f}_{1}}={{f}_{2}}\] When there are no electrostatic force, But \[{{f}_{2}}\]= attractive nuclear force - repulsive electrostatic force                         \[{{f}_{1}}={{f}_{3}}>{{f}_{2}}\]


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