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Guess
Papers
(FOR
CLASS BA,BSC PART 1) |
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B.SC.
Part One 3rd Year
Paper:Physics (Paper“B”)
Time Allowed:3 hours Max.Marks:30
Note: Attempt
any five questions.All questions carry equal marks.
Q.1 Distinguish between
standing waves and travelling waves.
Q.2
The equation of a transverse wave in stretch string is y= 4sin [
-
]
Q.3 State
the Zeroth law of thermodynamic. Write the conversion relation between
(i)
Celsiustemperature and kelvin temperature.
(ii)
Celsius temperature and fahrenheit temperature.
Q.4
What are reversible and irreversible
processes? In how many ways the second law of thermodynamics
can be based? Give statements.
Show
that ( )T
= T ( )p
andCp - Cv = T ( )T (
)p
Q.5 What is physical
pendulum? Find an expression for the time period of a physical pendulum?
Q.6 Distinguish
clearly between polarized and unpolarized light? Explain different
methods by which light
can be polarized?
Q.7 Distinguish
between isothermal and idiabatic process why ideal gas equation differentfor
the cases?
Q.9 Explain
what is meant by Doppler effect. and compute the frequency shift notices
for an approaching
sound towards stationary observer?
Q.10
Calculate the intensity of light from young's double slit experiment?
Also derive the conditions for minima
and maxima?
Q.11 Show that
the efficiency of a reversible ideal heat engine is related to the
co-efficient of performance
of the reversible refrigerator obtained by running the engine backward
by the relation
e = 1/ (k +1)
Q.12 Is
a human being a heat engine? Explain.
Q.13 A
monatomic ideal gas initially at 19 c is suddenly compressed to one
tenth its original volume? What
is it temperature after compression?
Q.14
Show that for ideal gas Cp=Cv+R where Cp and Cv are molar specific
heat constant P and V respectively.
Q.15 What is entropy? Explain
the principle of the increase of entropy?
Q.16 A
gas is allowed to expend adiabatically and quasi-statically what is
the change in entropy? |
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