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BSc Sem VI 2014 2015 2015 Physics Question Paper - Mumbai University | munotes

TyBsc Sem Vl Physics 2015...pdf
SEM VI · 2014-2015 · 1 May 2025

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Questions asked in this paper

Q.P. Code : 14685
(1) All questions are :
to the right indicate full marks
(5) Use of log table and non programma
(a) Attempt any one How did Gamow res i
(i) Discuss alpha
i i ression for the same
i. Define Q equation. an exp
for exoergic nuclear reactions
Attempt any one
(b) With the help of a relevant graph, explain the Geiger-Nuttal law alp 5
(ii) Name the different types of nuclear and explain any one
(a) Attempt any one
What were the difficulties involved in the interpretation of B-ray spectrum? 10
Explain them in brief. How did Pauli overcome these difficulties ?
(ii) What is Mossbauer effect ? Describe the experimental set up to study 19
Mossbauer the significance of the movable source in the
(b) Attempt any one
(i) With the help of neat labeled diagram, describe experimental arrangement 5
of Reines & Cowan's experiment for the detection of neutrino
(ii) the nuclear isomerism with the help of suitable example. 5
(a) Attempt any one
of ionization current (pulse height) with voltage. Explain 10
each region with the help of graph,
mass formula. Explain the contribution 10
j Discuss the merits and demerits of cloud chamber. :
Discuss energetics of mirror nuclei
Attempt any one
i) Whatis fission chain reaction ? What are the difficulties one comes actoss 10
sustained chain reaction with uranium ? Describe neutron cycle
in a thermal nuclear reactor
(ii) What elementary particles ? Give an account of the experimental 10
detection of antiproton and antineutron
(b) Attempt any one
(i) Explain the process of energy production in stats. = 5
(ii) “What do you understand by prompt neutrons and delayed neutrons ? Explain
the significance of delayed neutrons in a nuclear reactor
(a) Attempt any one
decays by emitting four groups of alpha particles having kinetic 4
energies in (MeV) of 7.68, 9.07 and 10.51 respectively. Calculate the
alpha disintegration encrgies. Sketch the energy level scheme
(ii) neutron is incident on a stationary target of F atoms. The reaction 4
(n, p) ,O has a Q value of — 3.9 MeV. Calculate the lowest neutron
energy which make the reaction possible
that shows activity when it decays into and calculate 4
emitted in the B decay of &
fission of nucleus is 170 MeV

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