INTRODUCTION
1. What are 'life processes'?
WORK
2. What is work?
SCIENTIFIC CONCEPTION OF WORK
3. What are the conditions that need to be satisfied for work to be done?
4. If one of the two conditions does not exist, then work ---------------------.
WORK DONE BY A CONSTANT FORCE
5. Work done = -----------------------------------------------
6. W = -------------
7. Work has only ----------------- and no ------------.
8. Unit of work is -------------- or -------------.
9. Work done is ------------------ when the force acts opposite to the direction of displacement.
10. Work done is ---------------- when the force is in the direction of displacement.
11. Define 1J of work.
12. Explain some situations in which force and the displacement are in the same direction.
13. Explain some situations in which force and displacement are in the opposite direction.
ENERGY
14. ----------------- is the biggest natural source of energy to us.
15. We can also get energy from other natural resources like --------------, --------------- and ---------------------.
16. What is energy?
17. An object capable of doing work is said to possess -----------------.
18. The object which does the work ------------------ energy.
19. The object on which the work is done --------------- energy.
20. How does an object with energy do work?
21. Unit of energy is ---------------.
22. Why is the unit of energy same as the unit of work?
23. What is name of the larger unit of energy?
24. 1 kJ = ----------------.
FORMS OF ENERGY
25. What are the different types of energy?
KINETIC ENERGY
26. Define kinetic energy.
27. Derive the expression for kinetic energy of an object.
POTENTIAL ENERGY
28. Define potential energy.
GRAVITATIONAL POTENTIAL ENERGY
29. What is the gravitational potential energy?
30. Derive the expression for the gravitational potential energy.
LAW OF CONSERVATION OF ENERGY
32. Define the law of conservation of energy.
33. kinetic energy + potential energy = -----------------.
34. Explain the transformation of energy from one form to another form with a suitable example.
35. Explain the law of conservation of energy with an example.
RATE OF DOING WORK
36. Life is impossible without transformation of energy. Do you agree? Why?
37. What is Power?
38. Power = --------------------.
39. P = ---------------.
40. Unit of power is -------------.
41. What is watt?
42. 1 watt = ------------------------: 1 W = -------------------.
43. 1 kilowatt = ------------------
44. 1kW = ---------------.
45. 1kW = ------------------.
46. Why is the concept of average power useful?
47. Average power = ----------------------.
COMMERCIAL UNIT OF ENERGY
48. An object of mass m moving with velocity v has a kinetic energy of --------------.
49. The energy used in one hour at the rate of 1KW is called ----------------.
1. What are 'life processes'?
WORK
2. What is work?
SCIENTIFIC CONCEPTION OF WORK
3. What are the conditions that need to be satisfied for work to be done?
4. If one of the two conditions does not exist, then work ---------------------.
WORK DONE BY A CONSTANT FORCE
5. Work done = -----------------------------------------------
6. W = -------------
7. Work has only ----------------- and no ------------.
8. Unit of work is -------------- or -------------.
9. Work done is ------------------ when the force acts opposite to the direction of displacement.
10. Work done is ---------------- when the force is in the direction of displacement.
11. Define 1J of work.
12. Explain some situations in which force and the displacement are in the same direction.
13. Explain some situations in which force and displacement are in the opposite direction.
ENERGY
14. ----------------- is the biggest natural source of energy to us.
15. We can also get energy from other natural resources like --------------, --------------- and ---------------------.
16. What is energy?
17. An object capable of doing work is said to possess -----------------.
18. The object which does the work ------------------ energy.
19. The object on which the work is done --------------- energy.
20. How does an object with energy do work?
21. Unit of energy is ---------------.
22. Why is the unit of energy same as the unit of work?
23. What is name of the larger unit of energy?
24. 1 kJ = ----------------.
FORMS OF ENERGY
25. What are the different types of energy?
KINETIC ENERGY
26. Define kinetic energy.
27. Derive the expression for kinetic energy of an object.
POTENTIAL ENERGY
28. Define potential energy.
GRAVITATIONAL POTENTIAL ENERGY
29. What is the gravitational potential energy?
30. Derive the expression for the gravitational potential energy.
LAW OF CONSERVATION OF ENERGY
32. Define the law of conservation of energy.
33. kinetic energy + potential energy = -----------------.
34. Explain the transformation of energy from one form to another form with a suitable example.
35. Explain the law of conservation of energy with an example.
RATE OF DOING WORK
36. Life is impossible without transformation of energy. Do you agree? Why?
37. What is Power?
38. Power = --------------------.
39. P = ---------------.
40. Unit of power is -------------.
41. What is watt?
42. 1 watt = ------------------------: 1 W = -------------------.
43. 1 kilowatt = ------------------
44. 1kW = ---------------.
45. 1kW = ------------------.
46. Why is the concept of average power useful?
47. Average power = ----------------------.
COMMERCIAL UNIT OF ENERGY
48. An object of mass m moving with velocity v has a kinetic energy of --------------.
49. The energy used in one hour at the rate of 1KW is called ----------------.
No comments:
Post a Comment