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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.
Test Helpful For:	ECAT Entry Test Physics Online Test Interview Questions about Physics All Universities Entrance Test Recruitments Tests

ECAT Physics Work and Energy Test Online

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Page 1 of 3

Physics

1. One Kilowatt hour is equal

3.5 x 10⁶ J

306 x 10⁵ J

3.6 x 10⁶ J

3.5 x 10⁵ J

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

1 x 10⁵

1.4 x 10⁸

1.3 x 10⁷

1.2 x 10⁶

3. 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

50 J

500 J

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

Potential energy

Kinetic energy

Electrical energy

Gravitational energy

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

At variable rate

At uniform rate

Any rate

At high rate

6. Which of the following is conservative field?

All of these

Electrostatic field

Frictional field

Viscous field

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

Data is not sufficient

Both have the same momentum

Light object

Heavy object

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

Energy

Work

Acceleration

Power

9. 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.

None of these

2mg – f = ½ mV²

mgh – f = ½ mV²

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

Becomes zero

Decreases

Remains the same

Increases

11. 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.

Cannot be known

= P.E.

> P.E.

12. The Escape velocity of Mars in Kms¯¹

5.23

3.99

5.00

2.89

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

1.5

1.55

1.56

1.2 moon m

14. 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

16:1

2:1

4:1

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

Maximum

Infinity

Minimum

Zero

16. Geothermal energy with in the earth is generated by

Compression of material

Residual heat of the earth

Radio active decay

All

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

A bullet striking a bag of sand

An electron captured by a proton

A man jumping onto a moving cart

Striking of two glass balls

18. 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

400 J

Zero

50 J

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

Its distance

Its potential energy

Its path

Its mass

20. The Escape velocity of Saturn in Kms¯¹

30.0

37.4

37.0

35.04

21. 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

22. 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

50 J

-400 J

400 J

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

1 x 10¹⁰ J

1 x 10¹² J

1 x 10¹¹ J

1 x 10⁹ J

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

60°

0°

90°

30°

25. The dimension of power is

[ML²T¯²]

[MLT]

[M²LT¯³]

[ML²T³]

Page 2 of 3

26. The original source of tidal energy is

Sun

Tides

Waves

Moon

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

42 W

2500 W

21 W

150 W

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

The tie taken in this work

The height of the table

The speed of the particle

The actual path taken

29. 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 10⁴ J

3.5 x 10⁶ J

3.5 x 10³ J

3.5 x 10⁹ J

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

An electron

An a particle

A proton

A deuteron

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

v/F

F/v

Fv²

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

Potential energy + kinetic energy

Kinetic energy

Sound energy

Potential energy

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

0.45 m/s

1.4 m/s

4.4 m/s

1 m/s

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

Several a day

None of these

Twice a day

Once a day

35. Reason of weightlessness in a satellite is

None of these

Center of mass

Zero reaction force by satellite surface

Zero gravity

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

2.40

2.43

1.23

2.59

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

None of these

Energy produced in nuclear plants

Electrical Energy

Power of petrol engine

38. 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

39. SI unit of work is

N – m

N – m²

N – ms¯¹

N – MS¯²

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

Varying intensity field

None of these

Conservative fields

Non-conservative field

41. The unit of power is

Joule

Watt per second

Kilojoule

Joule per second

42. 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?

mgh

Zero

-FGd

FGd

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

0.5Fv²

Fv²

0.5Fv

44. The original source of biomass energy is

Moon

Sun

None of these

Geothermal

45. Which of the following is true?

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

Momentum is conserved in all collisions but not kinetic energy

Both momentum and kinetic energy are conserved in all collisions

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

19.6 kg

19.6 m

19.6 J

19.6 N

47. The atmosphere is held to the earth by

Clouds

Gravity

Winds

The rotation of earth

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

Kinetic energy

Terminal velocity

Escape velocity

None of these

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

Maximum

Minimum

Zero

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

100

130

120

Page 3 of 3

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

1100 m sec¯¹

11 x 10⁸ m sec¯¹

11 m sec¯¹

1100 m sec¯¹

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

Sound

Electric energy

Light

Heat energy

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

No work

Negative work

Positive work but

Maximum positive work

54. 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

Cannot be concluded

Less

Equal

Greater

55. 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

None

It remains constant throughout the motion.

It decreases throughout the motion.

56. The Escape velocity of Earth in Kms¯¹

12.3

9.75

11.2

15.6

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

Scalar quantity

Vector quantity

Constant quantity

None of these

58. The relation between horse power and watt is

1 hp = 746 watts

1 hp = 546 watts

1 hp = 946 watts

1 hp = 1000 watts

59. Power is a measure of the

Rate of change of momentum

Rate of change of energy

Force which produces motion

Change of energy

60. 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 K.E = Gain in P.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

61. The original source of hydroelectric is

Wind

Sun

Moon

Water

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

1/5 liter

1/8 liter

1/6 liter

¼ liter

63. 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

64. The original source of geothermal energy is

Earth

Fossil fuels

Moon

Biomass

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

3.92 J

392.1 J

39.2 J

38.2 J

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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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