Jeremy C. Zodinliana posted an Question

October 06, 2021 • 16:01 pm 30 points

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10 5. Pauli's exclusion principle is applicable to (a) pions (b) photons (c) quarks (d) kaons 6. The multiplet number (M) for r-mesons is (a) 1 6) 2 (c) 3 (d) 4 7. The lepton number L = 0 for (a) electron (b) muon (c) tauon (d) pion 8. Which effect determines the positive charge nature of primary cosmic rays? (a) east-west effect (6) Latitude effect (c)Altitude effect (d) Both a and b 9. What percentage of original radioactive substance is left after 5 half-lives? (a) 20% (6) 3 % 5% d) 10% 10. In gamma ray emission from nucleus (a) only the proton number changes (6) both the proton and neutron number change (c) there is no change in either proton or neutron number (d) only the neutron number changes 11.Which of the following statements is correct? (a) A neutron can decay to a proton inside a nucleus (6) A proton can decay to a neutron inside a nucleus (c)An isolated proton can decay to a neutron (d) both (a) and (6) 12.A nuclear model leads to the understanding of (a) nuclear shape and size (b) nuclear properties exhibited by nucleus (c) origin of nuclear force (d) All of the above 13.3. The asymmetry term in the semi-empirical mass formula is due to (a) non-spherical shape of the nucleus (6) non-zero spin of the nucleus (c) unequal number of protons and neutrons in the nucleus (d) odd number of protons in the nucleus 14. Nuclear liquid drop model fails to explain (a) the extremely high stability of nuclei with magic numbers (b) the measured spin and magnetic moment of the nuclei (c) both (a) & (6) (d) None of the above 15.According to nuclear shell model, the total angular momentum of s0'" is (a) (6) (c) (d) zero

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