## Importatnt Qustion

Chapter 02

VECTORS AND EQUILIBRIUM

1. Explain the addition of vectors by rectangular component method.
2. Define vector product of vectors. Give at least two examples for each. Write down its four characteristics.
3. Define scalar product of vectors. Give at least two examples for each. Write down its four characteristics.

Chapter 03

MOTION AND FORCE

1. Discuss the elastic collision of two smooth balls in one dimension and find their velocities after the collision.
2. Define linear momentum. Give its S.I. unit. State and prove the law of conservation of linear momentum.

Chapter 04

WORK AND ENERGY

1. Define gravitational field. Prove that work done in the earth’s gravitational field is independent of path followed.
2. Discuss interconversion of potential and kinetic energies I the presence of friction.
3. Define gravitational field. Show that the work done in gravitational field is
4. independent of the path followed. Hence show that the work done in closed path is zero.

Chapter 05

CIRCULAR MOTION

1. What are geostationary satellites? Calculate the radius of geo-stationary orbit.
2. How artificial gravity is provided in space satellites. Derive necessary relation for artificial gravity.
3. Define centripetal force and derive an expression for it.

Chapter 06

FLUID DYNAMICS

1. Setat the equation of continuity and derive its relation.
2. State and prove Bernoulli’s equation.

Chapter 07

OSCILLATIONS

1. Define simple harmonic motion. Derive the relation for instantaneous velocity for the projection of particle ‘p’ moving in a circle.
2. Define simple harmonic motion. Show that energy is conserved for a body executing simple harmonic motion.
3. Derive relation for K.E, P.E, and T.E of a mass ‘m’ attached to a spring of constant k. show that T.E is constant.
4. What is Doppler’s effect? Find the apparent change in frequency when source is at rest and observer is moving.
5. What are defects in Newton’s formula for speed of sound? How this formula was connected by Laplace?

Chapter 09

PHYSICAL OPTICS

1. Describe young double slit experiment. Derive the expression for fringe spacing.
2. Define diffraction of light. Explain diffraction of X-rays by crystal and derive Bragg’s Equation.
3. Explain the working of Michelson’s interferometer.

Chapter 10

OPTICAL INSTRUMENTS

1. Write down the construction and working of compound microscope. Derive a relation for its angular magnification.
2. What is simple microscope? Derive relation for its angular magnification.

Chapter 11

HEAT AND THERMODYNAMICS

1. Prove that the absolute temperature of an ideal gas is directly proportional to the average translational kinetic energy of gas molecules.
2. Show that pressure exerted by the gas is directly proportional to the average translational kinetic energy of gas molecules.
3. Explain the working of a petrol engine and compare its efficiency with diesel engine.
4. What is Carnot engine? Calculate its efficiency.
5. Define Cp and Cv. Show that Cp – Cv = R