QUESTION 2: a) Define Electric Field Intensity E. State its value for a point charge and give its units.
b) State differential form of Gauss's law and from there develop the Poisson and Laplace's equations.
c) A charge of 10( square root 2) Coulomb is located at (3i+4j+5k)m. Calculate the Electric field intensity at a point having position vector (5i+4j+3k)m.

QUESTION 3: a) Differentiate between a series and parallel resonant circuit.
b) Explain the construction and operation of a transformer. What are the energy losses in a transformer? How are they reduced to a minimum?
c) A series LCR circuit contains a coil with L=2.25 H, a capacitor having C= 16 microF and a resistor with R= 50 ohms. Calculate the impedance and phase difference between current and voltage. (Take frequency f= 50 Hz)

QUESTION 4: a) State and explain basic postulates of Quantum Physics.
b) Briefly explain with examples what do you mean by Eigen Function and Eigen Values.
c) Derive the time-dependent Schrodinger wave equation for a free particle.

QUESTION 5: a) Why the resistivity of metals increases with temperature but that of the semiconductors decreases?
b) In the process of making semiconductor devices, why silicon is preferred over Germanium?
c) Briefly explain the construction and operation of a Bipolar Junction Transistor (BJT). How can it be used as an Amplifier?

QUESTION 6: a) What do <1 1 1>, [010], (111) and {100} represent for a cubic crystal lattice?
b) What is packing factor? Determine the Atomic Packing Factor of FCC Lattice.
c) With neat diagram showing X-ray Diffraction, derive an expression for Bragg's Law.

QUESTION 7: a) Define Curie and Becquerel. Establish the relation between them.
b) Calculate the decay constant for C-14 which has a half-life of 5730 years.
c) State and explain the Half-Life and Mean life of a radioactive element. Show that <T> is greater than [T1/2].

QUESTION 8: Write short notes on any two of the following:
a) Zeeman Effect
b) Faraday's Law of Electromagnetic Induction
c) Elementary Particles and their Properties.