N A L A N D A O P E N U N I V E R S I T Y
M.Sc. Physics, Part-II
PAPER-XIII
(Environmental Physics)
Annual Examination, 2016
Time 3 Hours. Full Marks 80
Answer any Five Questions.
All questions carry equal marks.
1. What is LIDAR Explain its principle, physical and technical aspects with applications.
2. Explain Einstein's A and B coefficients of absorption, stimulated emission and spontaneous
emission. Hence deduce Lambert-Beer's law.
3. Discuss equations of motion for fluid and hence obtain the Navier-Stokes equation for fluids.
4. What do you mean by End-of-Year Cost' and 'Rest Value' What is 'building times' and
'break-even points' with reference to conventional energy sources
5. Enumerate the basic atmospheric forces to study laws of motion in atmosphere. Explain
what do you mean by 'Baroclinic Model' and 'Reynolds Number' (Re.).
6. Discuss improvements in diffusion equations to predict the transport of pollutants to a fair
accuracy. What is Dupuit Approximation Discuss.
7. Why Bifuels are called renewable energy source Explain, briefly, the four generations of Bifuels.
8. Derive Fick's law and explain its analogy with heat transfer equation.
10. Write short notes on any Two of the following
Photovoltaic effect.
Green house gas model.
Black body radiation.
Solar Pond.