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ECAT Physics Work and Energy Test Online

Maan AliLast Updated: May 26, 2025

Physics Work and Energy MCQS Online Test

ECAT Physics Work and Energy Chapter Online Test

Total Questions:	65
Time Allowed:	40 Minutes
Total Marks:	65
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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ECAT Physics Work and Energy Test Online

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Page 1 of 3

Physics

1. An average energy used by the car from petrol in its life time

1 x 10¹² J

1 x 10⁹ J

1 x 10¹¹ J

1 x 10¹⁰ J

2. Work is defined as the dot product of force and displacement but it is a

Scalar quantity

Constant quantity

None of these

Vector quantity

3. If the force applied is F and the velocity gained is v, then the power developed is

F/v

v/F

Fv²

4. The dimension of power is

[ML²T¯²]

[MLT]

[M²LT¯³]

[ML²T³]

5. The type of energy possessed by a simple pendulum, when it is at the mean position is

Potential energy + kinetic energy

Potential energy

Kinetic energy

Sound energy

6. The unit of power is

Joule per second

Kilojoule

Joule

Watt per second

7. Approximate power of colour T.V in watt is

120

130

100

8. The Escape velocity of Earth in Kms¯¹

15.6

9.75

11.2

12.3

9. If a body a mass of 2 kg is raised vertically through 2m, then the work done will be

39.2 J

392.1 J

3.92 J

38.2 J

10. An elevator weighing 3.5 x 10–6 N is raised to a height of 1000 m in the absence of friction, the work done is

3.5 x 10⁹ J

3.5 x 10⁶ J

3.5 x 10⁴ J

3.5 x 10³ J

11. When a force is parallel to the direction of motion of the body. Then work done on the body is

Zero

Maximum

Minimum

Infinity

12. A man of mass 50 kg jumps to a height of 1 m. His potential energy at the highest point is (g = 10 m/s²)

60 J

50 J

600 J

500 J

13. The work done is a gravitational field is independent of:

Its path

Its mass

Its potential energy

Its distance

14. The field, in which is the work done is independent of the path followed, is called

Conservative fields

Non-conservative field

Varying intensity field

None of these

15. Which of the following is conservative field?

Viscous field

Frictional field

Electrostatic field

All of these

16. A container with a mass of 5 kg is lifted to a height of 8 m. How much work is done by the gravitational force?

Zero

-400 J

400 J

50 J

17. A container with a mass of 5 kg is lifted to a height of 8 m. How much work is done by the external force?

Zero

-400 J

400 J

50 J

18. Two objects of masses 1 x 10¯³ kg and 4 x 10¯³ kg have equal momentum. What is the ratio of their kinetic energies?

19:1

4:1

2:1

16:1

19. Which of the following is not a perfectly inelastic collision?

A bullet striking a bag of sand

Striking of two glass balls

A man jumping onto a moving cart

An electron captured by a proton

20. A spacecraft moves around Earth in a circular orbit with a constant radius. How much work is done by the gravitational force on the spacecraft during one revolution?

-FGd

Zero

mgh

FGd

21. Which form of energy does the flowing water possess?

Potential energy

Gravitational energy

Kinetic energy

Electrical energy

22. Geothermal energy with in the earth is generated by

All

Residual heat of the earth

Compression of material

Radio active decay

23. Power is a measure of the

Rate of change of energy

Force which produces motion

Change of energy

Rate of change of momentum

24. Approximate power of flash light in watts (2 cells)

1.56

1.2 moon m

1.5

1.55

25. The K.E of a light and a heavy object is same. Which object has maximum momentum?

Data is not sufficient

Heavy object

Both have the same momentum

Light object

Page 2 of 3

26. Reason of weightlessness in a satellite is

Zero gravity

Zero reaction force by satellite surface

Center of mass

None of these

27. The relation between horse power and watt is

1 hp = 946 watts

1 hp = 746 watts

1 hp = 1000 watts

1 hp = 546 watts

28. If a body falls from a height, the relation between its kinetic and potential energies is:

Gain in K.E = Loss in P.E. – Work done against friction

Loss in P.E = Gain in K.E. – Work done against friction

Loss in K.E = Gain in P.E. + Work done against friction

Gain in P.E = Loss in K.E. + Work done against friction

29. For the same velocity, the momentum is maximum for:

An electron

A proton

An a particle

A deuteron

30. A truck driver is typing to push a loaded truck with an applied force. Unfortunately, his attempt was unsuccessful the truck stays stationary no matter how hard the driver pushes. How much work is done by the driver?

Zero

-Fd

F/d

31. The Escape velocity of Saturn in Kms¯¹

30.0

37.0

37.4

35.04

32. If air resistance is negligible, the sum total of potential and kinetic energies of a freely falling body ___________.

Becomes zero

Remains the same

Decreases

Increases

33. The atmosphere is held to the earth by

Clouds

Winds

The rotation of earth

Gravity

34. The work done in taking a particle from the floor to a table depends on

The speed of the particle

The height of the table

The actual path taken

The tie taken in this work

35. A body of mass 10 kg is dropped to the ground from a height of 10 meters. The work done by from a height of 10 meters. The done by the gravitational force is (g = 9.8m/s²)

- 980 Joules

- 490 Joules

+ 980 Joules

+ 490 Joules

36. The initial velocity with which a body projected upward and never comes back is called

Kinetic energy

Escape velocity

None of these

Terminal velocity

37. A meteor of mass m enters the Earth’s atmosphere at an angle θ to the horizontal with an initial velocity v. Which of the following is true about vertical component of its velocity?

It remains constant throughout the motion.

It increases throughout the motion

It decreases throughout the motion.

None

38. The original source of hydroelectric is

Sun

Wind

Moon

Water

39. A coolie carries a load of 500 N to a distance of 100 m. The work done by him is

50,000 Nm

5 N

1/5 N

40. The original source of tidal energy is

Waves

Moon

Sun

Tides

41. Kilowatt-hour commercially used to measure the consumption of

Power of petrol engine

Electrical Energy

None of these

Energy produced in nuclear plants

42. A machine does 2500 J of work in 1 min. What is the power developed by the machine?

2500 W

21 W

42 W

150 W

43. All the food you eat in one day has the energy equivalent to petrol of

1/8 liter

1/6 liter

1/5 liter

¼ liter

44. Work done is a gravitational field along a closed loop is

Minimum

Zero

Maximum

45. The escape velocity of moon in Kms¯¹ is

2.59

1.23

2.43

2.40

46. SI unit of work is

N – m

N – ms¯¹

N – m²

N – MS¯²

47. The value of the escape velocity on the surface of the earth is:

11 m sec¯¹

11 x 10⁸ m sec¯¹

1100 m sec¯¹

48. A man pushes a wall but fails to displace it. He does:

Maximum positive work

Negative work

No work

Positive work but

49. A bullet is shot from a rifle. As a result the rifle recoils. The kinetic energy of rifle as compared to that of bullet is

Less

Equal

Greater

Cannot be concluded

50. The P.E. of a body at a certain height is 200 J. The kinetic energy possessed by it when it just touches the surface of the earth is:

Cannot be known

> P.E.

< P.E.

= P.E.

Page 3 of 3

51. If it is assumed that a frictional force f is present, during the downward motion of an object of mass, which of the following relation is true.

2mg – f = ½ mV²

mgh – f = ½ mV²

None of these

mgh – f = ½ mV²

52. The original source of biomass energy is

None of these

Sun

Moon

Geothermal

53. The average power and instantaneous power become equal if work is done at:

At uniform rate

Any rate

At variable rate

At high rate

54. A solar cell converts sun’s energy into:

Sound

Heat energy

Electric energy

Light

55. Approximate power of a car moving at a speed of 90 kmh¯¹ in watts

1.2 x 10⁶

1.3 x 10⁷

1 x 10⁵

1.4 x 10⁸

56. The Escape velocity of Mars in Kms¯¹

5.00

2.89

5.23

3.99

57. A 1 kg mass has a kinetic energy of 1 joule when its speed is

1.4 m/s

1 m/s

0.45 m/s

4.4 m/s

58. The original source of geothermal energy is

Fossil fuels

Moon

Biomass

Earth

59. Which of the following is true?

Both momentum and kinetic energy are conserved in all collisions

Momentum is conserved in all collisions but kinetic energy is conserved only in inelastic collisions

Momentum is conserved in all collisions but not kinetic energy

Neither momentum nor kinetic energy is conserved in inelastic collisions

60. The work done by the body is maximum when it has angle

30°

60°

0°

90°

61. One Kilowatt hour is equal

3.6 x 10⁶ J

306 x 10⁵ J

3.5 x 10⁵ J

3.5 x 10⁶ J

62. Name the physical quantity which is equal to the product of force and velocity.

Power

Energy

Acceleration

Work

63. A body of mass 2 kg is dropped from a height of 1m. Its kinetic energy as it touches the ground is

19.6 m

19.6 kg

19.6 N

19.6 J

64. A boat moving at constant speed v through still water experiences a total frictional drag F. What is the power developed by the boat?

0.5Fv

0.5Fv²

Fv²

65. The moon produce the tides raise the water in the se roughly

Twice a day

Once a day

None of these

Several a day

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Maan AliLast Updated: May 26, 2025

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11 Comments

faran says:

July 25, 2021 at 6:09 pm

centripetal force ailso donot work

Azhar saeed shaheen says:

August 7, 2017 at 5:18 pm

100%

Azhar saeed shaheen says:

August 7, 2017 at 4:45 pm

i am not agree with the answer of q no 10 and pls any one tell me the lojic of q no 14 it will so kind of u dear friend

waqar says:

June 10, 2017 at 8:56 pm

It’s a good site for Entry test preparation.

umair ahmed says:

March 18, 2017 at 1:46 am

i also

1. Azhar saeed shaheen says:
  
  August 7, 2017 at 4:47 pm
  
  i also
  
Umair Yaseen says:

March 15, 2017 at 3:02 pm

is that correct???????

1. umair ahmed says:
  
  March 18, 2017 at 1:47 am
  
  yes bro
  
2. Azhar saeed shaheen says:
  
  August 7, 2017 at 4:46 pm
  
  i think its not correct
  
Haseeb Butt says:

September 16, 2016 at 2:17 am

Kilowatt hour is unit of electrical energy and yup centripetal force does no work

Usman Laghari says:

July 31, 2016 at 9:10 pm

80% at first attempt

ECAT Physics Work and Energy Test Online

Physics Work and Energy MCQS Online Test

ECAT Physics Work and Energy Chapter Online Test

ECAT Physics Work and Energy Test Online

Physics

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Maan Ali

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Physics Work and Energy MCQS Online Test

ECAT Physics Work and Energy Chapter Online Test

ECAT Physics Work and Energy Test Online

Physics

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