LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION – ADV.ZOO. & BIO TECHNOLOGY
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FOURTH SEMESTER – APRIL 2008
PH 4204 – PHYSICS FOR BIOLOGY
Date : 24/04/2008 Dept. No. Max. : 100 Marks
Time : 9:00 – 12:00
PART A
Answer all questions: (10 х 2=20)
- Define Coefficient of Viscosity. Give its units.
- State the Fick’s law of diffusion.
- State the laws of refraction
- What is glycolysis?
- What are coupled reactions?
- Find the de Broglie wavelength of an electron with a kinetic energy of 100 eV.
- List different methods of detecting ultrasonic waves.
- The disintegration constant λ of a radioactive element is 0.00231 per day. Calculate its half- life and average life.
- What are radio isotopes? Give some examples.
- What are transducers? Give the different types of transducers.
PART B
Answer any four questions: (4 х 7.5=30)
- Derive Poiseuille’s formula for the rate of flow of a liquid through a capillary tube.
- Obtain an expression for the resolving power of a microscope.
- (a) What is Galton’s Whistle? (5)
(b) Calculate the fundamental frequency of vibration of a quartz crystal of
thickness 5mm if the velocity of longitudinal waves through it is 5760m/s
- Derive an expression to calculate the half life and mean life period an radioactive element.
- Compare p700 and p680.
PART C
Answer any four questions: (4 х 12.5=50)
- a) Define Osmotic pressure and state its laws. (5 marks)
- b) Deduce an expression for the elevation of the boiling point of a liquid by a non-volatile
substance dissolved in it. (7.5 marks)
- Write a detailed note of the Kreb’s cycle.
- With necessary block diagram, describe ultrasonic imaging technique.
- Write in detail about the energetics of beta decay.
- Give a detailed account on the pressure transducer.
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