B.Sc. – I (Semester – I) Biotechnology (New),2014 Question Paper,Fundamentals of Chemistry and Biophysics BIOPHYSICS (Paper – II),Solapur University Question Paper

Solapur University Question Paper
B.Sc. – I (Semester – I) Biotechnology (New) Examination, 2014
Fundamentals of Chemistry and Biophysics
BIOPHYSICS (Paper – II)
Day and Date : Tuesday, 10-6-2014 Total Marks : 50
Time : 3.00 p.m. to 5.00 p.m.
N.B. 1) All questions are compulsory.
2) Figures to the right indicate full marks.
3) Draw neat diagrams wherever necessary.
4) Use of logarithmic table is allowed.
1. Select correct alternative from the following : 10
i) Viscosity of liquid ___________________ with increase in temperature.
a) Decreases b) Increases
c) Does not change d) None of these
ii) If the frequency of waves is above ___________________ then they are called
ultrasonic waves.
a) 20 Hz b) 1 KHz
c) 2 KHz d) 20 KHz
iii) When an angle of incidence ‘i’ is equal to 25°, by the law of reflection an
angle of reflection is equal to ___________________
a) 45° b) 50°
c) 30° d) 25°
iv) Cgs unit of viscosity is ___________________
a) Newton b) Poise
c) Erg d) Hertz
P.T.O.
Seat
No.
SLR-DN – 47 -2-
v) Young’s modulus is the property of ___________________
a) Only solids b) Only liquids
c) Solids and liquids d) Liquids and gases
vi) By Brewster’s law, polarising angle (ip) and refractive index ( ) μ are related
as ___________________
a) ( ) p μ = tan i b) ( ) p μ = Sin i
c) ( ) p μ = cos i d)
p
i
1
μ =
vii) ___________________ indicates the resistance offered by the material when an
attempt is made to change in its shape.
a) Young’s modulus b) Modulus of rigidity
c) Bulk modulus d) None of these
viii) If water flows through a horizontal canal calmly then the type of flow is
___________________
a) Circular b) Turbulent
c) Streamline d) None of these
ix) For constructive type of interference of light, the path difference between two
monochromatic light waves reaching at a point is___________________
a) nλ b) 2 nλ
c) ( ) 2 n +1 λ d) ( ) 2
2n 1 λ
+
x) Angle of contact between pure water and clean glass is___________________
a) 90° b) Zero
c) 120° d) 50°

 -3- SLR-DN – 47
2. Answer any five of the following : 10
1) Define : a) Stress b) Strain
2) What is Doppler effect ?
3) State any two applications of a Laser source of light.
4) Define : a) Range of molecular attraction
b) Sphere of influence
5) State the properties of ultrasonic waves.
6) Define coefficient of viscosity.
3. A) Attempt any two of the following : 6
1) How beats are formed ? State any two applications of beats.
2) Describe the process of pumping used in production of laser.
3) Explain streamline flow and turbulent flow of a liquid.
B) What is elasticity ? Explain the importance of elasticity. 4
4. Attempt any two of the following : 10
1) What are ultrasonic waves ? Explain in brief any two applications of them.
2) Describe the working of venturimeter.
3) Discuss the factors affecting surface tension.
5. Attempt any two of the following : 10
1) Write a note one Nicol prism.
2) Describe Jaeger’s method for measurement of surface tension.
3) What do you mean by
a) Young’s modulus
b) Bulk modulus
c) Modulus of rigidity ?
state the relation between them.
___________________

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