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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. 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

600 J

500 J

50 J

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

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

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

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

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

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

38.2 J

392.1 J

3.92 J

39.2 J

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

Electrical energy

Potential energy

Gravitational energy

Kinetic energy

5. The Escape velocity of Earth in Kms¯¹

11.2

15.6

9.75

12.3

6. 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

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

2.43

2.40

1.23

2.59

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

90°

0°

30°

60°

9. The original source of biomass energy is

Moon

Sun

Geothermal

None of these

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

Scalar quantity

None of these

Vector quantity

Constant quantity

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

19.6 J

19.6 m

19.6 N

19.6 kg

12. Which of the following is conservative field?

Viscous field

All of these

Frictional field

Electrostatic field

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

1.4 x 10⁸

1 x 10⁵

1.3 x 10⁷

1.2 x 10⁶

14. 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?

Zero

FGd

-FGd

mgh

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

Sound energy

Potential energy + kinetic energy

Kinetic energy

Potential energy

16. 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

None of these

mgh – f = ½ mV²

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

Fv²

F/v

v/F

18. The original source of hydroelectric is

Sun

Moon

Water

Wind

19. The Escape velocity of Saturn in Kms¯¹

37.0

37.4

35.04

30.0

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

150 W

42 W

2500 W

21 W

21. One Kilowatt hour is equal

3.6 x 10⁶ J

3.5 x 10⁶ J

3.5 x 10⁵ J

306 x 10⁵ J

22. 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 increases throughout the motion

It remains constant throughout the motion.

None

It decreases throughout the motion.

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

A man jumping onto a moving cart

An electron captured by a proton

A bullet striking a bag of sand

Striking of two glass balls

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

Remains the same

Decreases

Increases

Becomes zero

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

At high rate

At variable rate

Any rate

At uniform rate

Page 2 of 3

26. The relation between horse power and watt is

1 hp = 946 watts

1 hp = 746 watts

1 hp = 546 watts

1 hp = 1000 watts

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

Maximum positive work

Negative work

No work

Positive work but

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

Terminal velocity

Escape velocity

Kinetic energy

None of these

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

The actual path taken

The height of the table

The speed of the particle

The tie taken in this work

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

4.4 m/s

1.4 m/s

0.45 m/s

1 m/s

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

130

100

120

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

Energy

Acceleration

Power

Work

33. 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 10³ J

3.5 x 10⁴ J

3.5 x 10⁹ J

3.5 x 10⁶ J

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

Zero

Infinity

Maximum

Minimum

35. Geothermal energy with in the earth is generated by

All

Residual heat of the earth

Radio active decay

Compression of material

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

Conservative fields

None of these

Non-conservative field

Varying intensity field

37. 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?

F/d

-Fd

Zero

38. The original source of tidal energy is

Sun

Tides

Waves

Moon

39. 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?

50 J

400 J

-400 J

Zero

40. Power is a measure of the

Rate of change of momentum

Rate of change of energy

Change of energy

Force which produces motion

41. 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?

400 J

Zero

-400 J

50 J

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

None of these

Electrical Energy

Energy produced in nuclear plants

Power of petrol engine

43. The atmosphere is held to the earth by

The rotation of earth

Clouds

Winds

Gravity

44. 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

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

A deuteron

An a particle

An electron

A proton

46. The dimension of power is

[M²LT¯³]

[ML²T¯²]

[ML²T³]

[MLT]

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

Sound

Light

Electric energy

Heat energy

48. The Escape velocity of Mars in Kms¯¹

3.99

5.00

2.89

5.23

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

1.55

1.2 moon m

1.5

1.56

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

Minimum

Maximum

Zero

Page 3 of 3

51. The original source of geothermal energy is

Biomass

Earth

Fossil fuels

Moon

52. The unit of power is

Joule

Kilojoule

Joule per second

Watt per second

53. 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

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

Both have the same momentum

Data is not sufficient

Light object

Heavy object

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

None of these

Several a day

Twice a day

Once a day

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

1/6 liter

¼ liter

1/8 liter

1/5 liter

57. Which of the following is true?

Both momentum and kinetic energy are conserved in all collisions

Momentum is conserved in all collisions but not kinetic energy

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

Neither momentum nor kinetic energy is conserved in inelastic collisions

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

1 x 10¹⁰ J

1 x 10¹¹ J

1 x 10¹² J

1 x 10⁹ J

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

Its path

Its distance

Its potential energy

Its mass

60. Reason of weightlessness in a satellite is

Zero gravity

None of these

Zero reaction force by satellite surface

Center of mass

61. 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?

4:1

16:1

2:1

19:1

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

50,000 Nm

1/5 N

5 N

63. SI unit of work is

N – ms¯¹

N – m

N – m²

N – MS¯²

64. 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

Greater

Less

Cannot be concluded

Equal

65. 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:

< P.E.

> P.E.

Cannot be known

= P.E.

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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

11 Comments

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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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