LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION – CHEMISTRY
THIRD SEMESTER – APRIL 2012
PH 3202 – PHYSICS FOR CHEMISTRY – II
Date : 02-05-2012 Dept. No. Max. : 100 Marks
Time : 9:00 – 12:00
PART – A
Answer ALL questions: (10×2=20)
- Convert the given decimal number into binary number 56.42.
- State Demorgan’s theorem.
- What is photoelectric effect?
- State Pauli’s exclusion principle.
- Write any two general properties of nucleus.
- What are elementary particles?
- Define absorption coefficient of material.
- What are the two types of sound waves?
- State Heisenberg’s uncertainty principle.
- What is box normalization of wave system?
PART – B
Answer any FOUR questions: (4×7.5 = 30)
- Simplify the given Boolean function using K-map F(A,B,C,D)=∑(0,2,5,7,8,10,13,15)
- Discuss about different types of photoelectric cells.
- Explain nuclear fission reaction by using liquid drop model.
- Describe the production of ultrasonic sound waves by Piezo-electric method.
- Derive Schrödinger time dependent wave equation from the fundamental wave equation.
PART – C
Answer any FOUR questions: (4×12.5 =50)
- With a logic circuit and truth table describe the working of a JK flip-flop.
- a) State the postulates of Bhor atom model (2.5)
- b) Obtain the expression for the radius and electron energy of the nth orbit. (10)
- a) Write the semi-empirical mass formula to calculate the binding energy of the nucleus and explain each term in it. (10)
- b) Draw a graph of binding energy per nucleon versus mass number. (2.5)
- Derive an expression of reverberation time from Sabine’s law.
- a) Find the de-Broglie wave length associated with a 46gm golf ball with velocity 36m/s. (2.5)
- b) Describe Davisson and Germer experiment for the study of electron diffraction. (10)
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