CBSE Class XI Physics :: Preparing for Mid term Examination

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The Chapters covered by most of the schools in mid term exam are

1. Physical World and Measurement & Dimensional Analysis
2. Kinematics (Notion in one dimension and two dimension
3. Newton's Laws of motion
4. Work Power Energy
5. System of particles and Rotation of rigid bodies
6. Gravitation
7. Properties of solids

How to revise in a week
Follow this method if you have not started yet.

• Find the answers to the long answer type questions (5 marks and 3 Marks ) listed below chapter wise and write them once.
• Get more short answer type questions from http://cbsephysics.2lv.in as well as from available refresher books and fins answers to them.
• Above all, if you do not understand any topic, consult your teacher and clarify your doubts. (You can post your questions and doubts to master@2lv.in )

IMPORTANT LONG ANSWER TYPE QUESTIONS/TOPICS

1. Types of errors and their propagation
2. Uses of Dimensional Analysis
3. Derivation of equations of motion graphically and mathematically
4. Principle of conservation of momentum and applications
5. Principle of conservation of angular momentum and applications
6. Theorems of Moment of inertia and applications
7. Motion of connected systems and derive expression for T and a
8. Law of conservation of energy and applications
9. Motion of centre of mass and applications
10. Radius of gyration and its value for different rigid bodies
11. Variation of acceleration due to gravity with height and depth
12. Define escape velocity, derive an expression for it and calculate its value on the surface of earth.
13. Define orbital velocity, derive an expression for it and calculate its value on the surface of earth.
14. Derive an expression for the total energy of a satellite
15. State Kepler's laws of planetary motion
16. Derive Newton's law of gravitation from Kepler's laws.
17. Derive expression for the time of flight, Horizontal range and maximum height of a projectile projected making an angle θ with the horizontal
18. Show that there are two angles of projection for obtaining the same range.
19. Derive an expression for the velocities after collision for perfectly elastic collision
20. Show that in ordinary elastic collisions there is a loss of kinetic energy due to collision (when bodies stick together after collision)
21. How can we determine the valocity of a bullet using ballistic pendulum
22. Which is more elastic - rubber or steel? Justify your answer.
23. Describe an experiment to determine the Young's modulus of a wire
24. Which are the different moduli of elasticity? Explain each.
25. Draw a graph showing the variation of stress with strain for a wire and explain the different portions of the graph.
26. Derive an expression for the energy stored in a stretched wire (spring)
27. Draw a graph showing the variation of inter atomic (inter molecular force) with distance and hence explain the origin of restoring force and elasticity.
28. Draw a graph showing the variation of frictional force with applied force.
29. Why is friction called a necessary evil? Explain
30. Which are the different ways of reducing friction? Explain how friction is reduced in each case.
31. Derive and expression for the acceleration of a body sliding down a rough inclined plane.
32. Derive an expression for the force required to be applied tangentially to make a body move up a rough inclined plane with an acceleration a.
33. What do you mean by banking of roads at curves? Derive an expression for the maximum safe velocity of a vehicle on a banked road for minimum wear and tear.
34. Derive an expression for the maximum safe velocity of a vehicle on a level road at curve
35. Why should one bend a bike while riding along a curve?
36. Derive an expression for the minimum velocity to be given to a body at the bottom of a vertical circle so that it just completes the vertical circle.
37. ............... To be continued