Veer Narmad South Gujarat University 2011-1st Year M.Sc BioTechnology SB-3651 Biophysics ( ) ( Sem 1 & 2 ) ( Five ntegrated ) - Question Paper
SB-3651
M. Sc. (Bio-Technology) (Sem. I & II) (Five Year Integrated) Examination March / April - 2011 Biophysics
SB-3651
[Total Marks : 70
Time : 3 Hours]
Instructions :
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Fillup strictly the details of signs on your answer book.
Name of the Examination :_
M. SC. (BIO-TECH.) (SEM. 1 & 2) (FIVE YEAR INTEGRATED)!
Name of the Subject:
BIOPHYSICS
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Student's Signature
10
8
2 (a) What is interference ? Derive the expression for the 8 wavelength of monochromatic light with the help of Newtons rings.
Newtons rings experiment. Calculate the radius of 4th
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dark ring. (X = 6000 A)
(a) Distinguish between Fraunhoffer and Fresnels 8 diffraction. Explain Fraunh offer diffraction due to circular aperture.
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of wavelength 6000 A . If the first minimum fall at an angle 0 = 18, calculate the width of the slit.
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(a) Explain the phenomenon of polarization by reflection. 8 Derive Brewsters law.
(b) Describe optical activity. 4
(a) State and prove Braggs law for x-ray diffraction by 8 a crystal. How will you determine wavelength of x-rays using Braggs law?
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(a) Explain principle, construction and working of 8 He-Ne laser.
(b) Calculate the energy of a photon of wavelength 4 6625 A [h = 6.625 x 1034 J.S., C = 3 x 101 m/s]
5 Write short notes on any three : 12
(i) Ultra violet and visible spectroscopy
(ii) Plasma skimming
(iii) Convective transport of gases
(iv) Poiseuilles formula
(v) Physiology of Respiration.
SB-3651] 2 [ 200 ]
(v) Chromatic aberration.
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