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Submit Papers đŠKL—561
M. Sc. (Sem. IV)
Regular/ATKT/Old ATKT/EX
Examination - May, 2023
PHYSICS
Paper IV(C)
Environmental Physics
Note : Attempt all questions.
Section A 5×3=15
Objective Type Questions
Choose the correct answer :
(i) Diffusion occurs from an area of :
(a) higher concentration to an area of lower concentration
(b) lower concentration to an area of higher concentration
(c) Both (a) and (b)
(d) None of the above
(ii) Radiation with the highest energy includes :
(a) α-rays
(b) β-rays
(c) γ-rays
(d) None of the above
(iii) Greenhouse gases includes :
(a) Nitric oxide
(b) Nitrous oxide
(c) Ethane
(d) None of the above
(iv) The renewable sources of energy are :
(a) Solar
(b) Wind
(c) Fuel
(d) All of the above
(v) Viscous forces :
(a) opposes relative motion between the layers
(b) not opposes the relative motion between the layers
(c) Both (a) and (b)
(d) None of the above
Section B 5×5=25
Short Answer Type Questions
Explain laws of motion.
Or
Give Kirchhoff's law of radiation.
Give the structure and thermodynamics of atmosphere.
Or
What is meant by Hydrostatic equilibrium ? Explain it.
Describe turbulence and turbulent diffusion.
Or
Explain wet and dry deposition.
What is meant by renewable sources of energy ? Explain it.
Or
Explain Reynolds' number.
Describe energy sources and combustion processes.
Or
What are viscous forces ? Explain.
Section C 5×9=45
Long Answer Type Questions
In environmental physics, explain structure and thermodynamics of atmosphere.
Or
Describe transport of matter, energy and momentum in nature.
Discuss Planck's law, Wien's displacement law of radiation in detail.
Or
What is meant by solar and terrestrial spectra, UV radiation and IR absorption ? Explain it.
What are the factors which affect governing air, water and noise pollution ?
Or
Describe environmental pollution and degradation in detail.
Explain how environmental changes occurs in environment and describe remote sensing.
Or
Discuss hydropower, fuel cells and nuclear energy in detail.
Describe elements of weather and climate and horizontal motion of air and water.
Or
Explain enchanced greenhouse effect and global climate models.