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AMU Medical AMU Solved Paper-2010

  • question_answer
    Consider the following statements. S1 : The nuclear force is independent of the charge of nucleons. S2 : The number of nucleons in the nucleus of an atom is equal to the number of electrons in the atom. S3 : All nuclei have masses that are less than the sum of the masses of constituent nucleons. S4 : Nucleons belong to the family of leptons while electrons are members of the family of hadrons. Choose the correct statement (s) from these

    A)  S1 only                                

    B)  S1 and S4

    C)  S2, S3 and S4   

    D)  S1 and S3

    Correct Answer: D

    Solution :

                     (i) Nuclear forces are charge independent. (ii) Number of nucleons = number of protons + number of neutrons (iii) It is found that the mass of a nucleus is always less than the sum of masses of its constituent nucleons in free state. The difference in masses is called mass defect. (iv) Nucleons belong to the family of hadrons while electrons belong to family of leptons.


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