Intermediate 1 Physics Important Questions 28594h

Intermediate Physics: Important very short answer type questions Chapter – 1 (Physical World)

1. What is the discovery of C V Raman?

2. What is the contribution of S Chandra Sekhar to Physics?

Chapter – 2 (Units and Measurement)

3. Distinguish between accuracy and precision.

4. How can systematic errors be minimised or eliminated?

5. What are the significant figures and what do they represent when reporting the result of a measurement?

6. Distinguish between fundamental units and derived units.

7. Express unified atomic mass and unit in kg.

Chapter – 3 (Motion in a Straight Line)

8. The states of motion and rest are relative. Explain.

9. How is average velocity different from instantaneous velocity?

10. Explain as example where the velocity of an object is zero but its acceleration is not zero.

11. A vehicle travels half of the distance L with a speed V1 and the other half with speed V2. What is the average speed?

Chapter – 4 (Motion in a Plane)

12. What is the acceleration of a projectile at the top of its trajectory?

13. When two perpendicular vectors of magnitude 8 units and 21 units combine, what is the magnitude of the resultant?

14. If A = i + j, then what is the angle between the vector and X – axis? (Practice all the problems)

Chapter – 5 (Laws of Motion)

15. When a bullet is fired from a gun, the gun gives a kick in the backward direction. Explain.

16. A bomb is exploded into two pieces; the pieces must travel in opposite directions. Explain. (Practice all textual problems)

Chapter – 6 (Work, Energy and Power)

17. Define: Work, Power and energy. State their SI units.

18. State the relation between the kinetic energy and momentum of a body.

19. Which physical quantity remains constant in an elastic collision?

20. Which physical quantity remains constant in an inelastic collision?

21. State the conditions under which a force does not work. (Practice all textual problems)

Chapter – 7 (System of Particles and Rotational Motion)

22. Is it necessary that a mass should be present at the centre of mass of any system?

23. Why are spokes provided in a bicycle wheel?

24. Why can we not open or close a door by applying force at the hinges?

25. Why should a helicopter necessarily have two propellers? (Practice all textual problems)

Chapter – 8 (Oscillations)

26. Give two examples of periodic motion which are not oscillatory.

27. Can simple pendulum be used in an artificial satellite? (Practice all textual problems)

Chapter – 9 (Gravitation)

28. State the units and dimensions of the universal gravitational constant.

29. Hydrogen is in abundance around the sun but not around the earth, explain.

30. What are polar satellites?

Chapter – 10 (Mechanical Properties of Solids)

31. State Hooke's law of elasticity.

32. Give two examples of nearly perfect elastic and plastic bodies.

33. State the units and dimensions of stress. (Practice all textual problems)

Chapter – 11 (Mechanical Properties of Fluids)

34. Define viscosity and write its units and dimensions.

35. What is the principle behind the carburettor of an automobile?

36. Why are drops and bubbles spherical?

37. What are water proofing agents and water wetting agents?

38. When water flows through a pipe, which of the layer moves fastest and slowest? (Practice all textual problems)

Chapter – 12 (Thermal Properties of Matter)

39. Why gaps are left between rails in a railway track?

40. What is latent heat of vaporization?

41. State Wein's displacement law.

42. What is specific gas constant?

43. State Newton's laws of cooling. (Practice all textual problems)

Chapter – 13 (Thermodynamics)

44. Define Thermal equilibrium.

45. Define moral specific heat capacity.

46. Why does the brake drum of an automobile get heated up while moving down at constant speed?

47. In summer, when the valve of a bicycle tube is opened, the escaping air appears cold. Why? (Practice all textual problems)

Chapter – 14 (Kinetic Theory)

48. Define mean free path.

49. State Boyle's law and Charles law.

(Practice all textual problems)

Intermediate Physics: Important short answer type questions (4 marks) 1. Show that the maximum height reached by a projectile launched at an angle of 45 degree is one quarter of its range.

2. A ball is dropped from a building and simultaneously another ball is projected upward with same velocity. Describe the change in relative velocity of the balls as a function of time.

3. State parallelogram of vectors; derive an expression for the magnitude and direction of the resultant vector.

4. Show that trajectory of an object thrown at certain angle with the horizontal is a parabola.

5. Derive formulae for maximum height and range of a projectile.

6. Define null vector, unit vector and position vector.

7. Explain average velocity and instantaneous velocity. When are they equal?

8. State the law of rolling friction.

9. Mention the methods used in decrease the friction.

10. Why are shock absorbers used in motor cycles and cars?

11. Why is pulling the lawn roller preferred to pushing it?

12. Define the momentum and impulse. State and explain the law of conservation of linear momentum.

13. Derive expressions for the kinetic energy and potential energy of a simple harmonic oscillator.

14. Show that in the case of one dimensional elastic collision, the relative velocity of approach of two colliding bodies is equal to the relative velocity of separation of the two bodies after collision.

15. Derive an expression for the height attained by a freely falling body after n number of rebounds from the floor.

16. Show that two equal masses undergo oblique elastic collision will move at right angle after collision, if the second body is initially at rest.

17. Distinguish between centre of mass and centre of gravity.

18. Explain about the centre of mass of earth moon system and its rotation around the sun.

19. Define vector product. Explain different properties of vector product with examples.

20. Define angular velocity and derive its equation.

21. Define angular acceleration and torque. Establish the relation between them.

22. State Kepler's laws of planetary motion.

23. Derive a relation between acceleration due to gravity on a planet and universal gravitational constant.

24. How does acceleration due to gravity change for the same values of height (h) and depth (d).

25. What is orbital velocity? Obtain an expression for it.

26. What is escape velocity? Obtain an expression for it.

27. What is geostationary satellite? State its uses.

28. Define Hooke's law of elasticity, proportionality, permanent set and breaking stress.

29. Define modulus of elasticity, stress and Poisson's ration.

30. Define Young's modulus, Bulk modulus and Shear modulus.

31. Describe the behaviour of a wire under gradually increasing load.

32. State Pascal law and it with the help of an experiment.

33. Explain dynamic lift with an example.

34. Explain surface tension and surface energy.

35. What is Torricelli's law? Explain how the speed of efflux is determined with an experiment.

36. What is Venturi-meter? Explain how it is used.

37. Explain hydraulic lift and hydraulic brakes.

38. In what way is the anomalous behaviour of water advantageous to aquatic animals?

39. Pendulum clocks generally go fast in winter and slow in summer. Why?

40. State and explain the first law of Thermodynamics.

41. Derive a relation between two specific heat capacities of gas on the basis of first law of thermodynamics.

42. Write the difference between isothermal and adiabatic process.

43. Explain briefly about the working of a heat engine.

44. Explain Quassi-static process.

45. Explain the concept of absolute zero of temperature on the basis of kinetic theory.

Intermediate Physics: Important long answer type questions (8 marks) 1. Define the angle of friction and angle of response. Show that angle of friction is equal to angle of response for a rough inclined plane. (Practice all problems related to this chapter, because many times one problem also added to this question.)

2. State and prove law of conservation of energy in case of freely falling body.

3. What are collisions? Explain the possible types of collisions? Develop the theory of one dimensional elastic collision.

4. State and prove parallel axis theorem.

5. State and prove perpendicular axis theorem.

6. State and prove principle of principle of conservation of angular momentum. Explain the principle of conservation of angular momentum with examples.

7. Define simple harmonic motion. Show that the motion of projection of a particle performing uniform circular motion, on any diameter is simple harmonic.

8. Show that the motion of a simple pendulum is simple harmonic and hence derive an equation for its time period. Define second pendulum.

9. State and explain the universal law of gravitation. Explain the determination of value of G by using Cavendish method.

10. Describe how the value of g varies from place to place (above and below the surface of the earth).

11. Define Hooke's law of elasticity and describe an experiment to determine the Young's modulus of the metal wire.

12. Define coefficient of viscosity. Explain Stoke's law.

13. State Bernoulli's principle from conservation of energy in a fluid flow through a tube. Derive the equation and give an example for Bernoulli's theorem.

14. State Boyle's law and Charles's law; derive ideal gas equation.

15. Explain the reversible and irreversible process. Describe the working of Carnot engine.

16. State second law of Thermodynamics, how is the heat engine different from a refrigerator?

17. Derive an expression for the pressure of an ideal gas in a container from kinetic theory and hence give kinetic interpretation of temperature