Important Questions Of Physics (FIRST SEM) BSc. CSIT

UNIT 1

1. Explain moment of inertia of the rigid body and torque. Also find the rotational kinetic energy of rigid body and condition of conservation.
2. Set up differential equation of an oscillation of horizontal spring by application of Hook’s law and Newton’s law. Write it’s solution. Also find acceleration, time period and velocity.

UNIT 2 :

1. Discuss magnetic dipole moment. What is its effect on atom and on molecules? Explain.
2. Discuss Hall Effect.
3. Torque on rectangular coil

UNIT 3 :

1. What is black body and black body radiation? Explain the characteristics of black body radiation.
2. State Franck-Hertz experiment and explain his experiment.
3. State Uncertainty Principle.

UNIT 4 :

1. Set up Schrodinger equation for hydrogen atom using spherical polar co-ordinates out separate radical and angular part of this equation without solving angular and radical-equation. Discuss the quantum number associated with these.

UNIT 5 :

      1.Discuss effective mass of electron and holes.

2. Discuss Kronig-Penny Model

UNIT 6 :

1. Carrier concentration of Intrinsic Semiconductor also find the Eg=(Ec + Ev)/2 where symbols have usual meanings
2. Explain equilibrium current across the P-N junction. Use Fermi-Dirac statistics and Maxwell Boltzmann distribution to show flow N to P is equal to the flow P to N. How electron current from P to N is not affected by the height of the potential energy barrier? Explain.
3. Explain the construction and working of bipolar junction transistor (BJT).

UNIT 7 :

1. Explain RTL and TTL gates. How memory and clock circuits can be made by using these gates? Explain how they work?
2. Describe the following process of IC production: a)Oxidation b)Pattern definition and c) Doping.