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Pune University - Sem - IV : Nuclear Physics, April 2010 (Old Course)

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Total No. of Questions : 7] P879 [Total No. of Pages : 2 [3722]-41 M. Sc. PHYSICS PHY UT - 801 : Nuclear Physics (Old Course) (2005 Pattern) (Sem. - IV) Time : 3 Hours] [Max. Marks : 80 Instructions to the candidates : 1) Question No. 1 is compulsory. Attempt any four questions from the remaining. 2) Draw neat diagrams wherever necessary. 3) Figures to the right indicate full marks. 4) Use of logarithmic tables and pocket calculator is allowed. Q1) Attempt any four of the following : a) What is distance of closest approach of a 2 MeV proton to a gold nucleus? How does this distance compare with for a deuteron and particle of the same energy? (Given : Z = 79, z = 1, e = 1.6 10 b) 19 C, 4 0 = 1 ) 9 10 +9 [4] Calculate the total cross-section for n-p scattering at neutron energy 2 MeV (lab). (Given : at = 5.38 F, as = 23.7 F, rot = 1.70 F and ros = 2.40 F, ! 34 = 1.054 10 Js, M = 1.6748 10 27 kg). [4] c) Calculate total angular momentum I, magnetic moment and Quadropole moment Q, also state parity of 8O17 using shell model. [4] d) State the assumptions of Fermi theory of Beta decay. [4] e) Explain pair production in case of absorption of Gamma Rays. [4] f) Which of the following reactions are allowed or forbidden under the conservation of strongess, conservation of baryan number and conservation of charge. + i) + + n g ^0 + K ii) + p g 0 + ^0 [4] P.T.O.

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Additional Info : M.Sc. PHYSICS, PHY UT - 801 : Nuclear Physics (Old Course) (2005 Pattern) (Semister - IV), Pune University
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