B.Sc. (II YEAR) SEMESTER-IV PHYSICS MODEL QUESTION PAPER ADIKAVI NANNAYA UNIVERSITY
https://www.computersprofessor.com/2017/04/bsc-ii-year-semester-iv-physics-model.html
ADIKAVI NANNAYA
UNIVERSITY::RAJAHMUNDRY
B.Sc. (II YEAR) PHYSICS
w.e.f. 2016-17 Admitted
Batch
PHYSICS MODEL QUESTION
PAPER
SEMESTER-IV (FOR
MATHEMATICS COMBINATION)
PAPER IV:
THERMODYNAMICS & RADIATION PHYSICS
Time:3 Hours Max.marks:75
SECTION-A
Answer any Five questions: 5X5=25M
1. Explain the terms viscosity of gas and diffusion of gas.
2. State and prove Carnots theorem.
3. Deduce Clausius – Clapeyron equation. What is its
importance.
4. Explain Joule Thomson effect.
5. Define solar constant. How do you estimate temperature of
Sun.
6. Calculate the efficiency of reversible engine working
between two temperature limits 72oC and 127oC .
7. The r.m.s speed of Hydrogen molecule is 1.34kmps. What
will be the r.m.s speed of oxygen molecule at same temperature.
8. Determine the temperature of the sun with help of weins
constant, given b = 2.92 X 10 -3m-k, maximum wavelength is 4900Ao.
SECTION – B
Answer all Questions: 5x10=50M
1.(a) Derive an expression for coefficient of thermal
conductivity on the basis of kinetic theory of gases
Or
(b) Derive an
expression for Maxwell’s law of distribution of molecular speeds of gas.
2. (a) Describe the working of Carnots engine and derive an
expression for its effiency.
Or
(b) Describe
Thermodynamic scale of temperature and explain its importance.
3. (a) Derive Maxwells thermodynamic relations by using
Thermodynamic potentials.
Or
(b) Derive an expression for the ratio of specific heats of
gas.
4. (a) Describe porous plug experiment of Joule Thomson.
Or
(b) Describe adiabatic
demagnetization. Explain how low temperatures are obtained using this effect.
5. (a) Explain Quantum theory of radiation and derive Plank’s
law.
Or
(b) Describe the
construction and working of total radiation pyrometer.
