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

Fv²

v/F

F/v

2. 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 10⁶ J

3.5 x 10⁹ J

3.5 x 10⁴ J

3. The relation between horse power and watt is

1 hp = 946 watts

1 hp = 546 watts

1 hp = 746 watts

1 hp = 1000 watts

4. 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

Equal

Greater

Less

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

392.1 J

38.2 J

3.92 J

39.2 J

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

Vector quantity

Constant quantity

None of these

Scalar quantity

7. The dimension of power is

[M²LT¯³]

[ML²T³]

[MLT]

[ML²T¯²]

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

An electron

A deuteron

An a particle

A proton

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

1/8 liter

¼ liter

1/6 liter

1/5 liter

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

Maximum

Infinity

Zero

Minimum

11. The atmosphere is held to the earth by

Winds

Gravity

The rotation of earth

Clouds

12. The original source of biomass energy is

Sun

None of these

Geothermal

Moon

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

30°

90°

60°

0°

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

Electrical energy

Gravitational energy

Kinetic energy

Potential energy

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

Minimum

Maximum

Zero

16. The Escape velocity of Saturn in Kms¯¹

37.0

35.04

30.0

37.4

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

2.43

1.23

2.59

2.40

18. The original source of hydroelectric is

Moon

Sun

Wind

Water

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

Heat energy

Sound

Light

Electric energy

20. 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 kg

19.6 m

19.6 N

21. 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

mgh – f = ½ mV²

2mg – f = ½ mV²

22. 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

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

At variable rate

At high rate

Any rate

At uniform rate

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

100

130

120

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

Decreases

Increases

Remains the same

Becomes zero

Page 2 of 3

26. 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)

+ 490 Joules

- 980 Joules

+ 980 Joules

- 490 Joules

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

1 x 10¹¹ J

1 x 10⁹ J

1 x 10¹⁰ J

1 x 10¹² J

28. 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?

None

It remains constant throughout the motion.

It increases throughout the motion

It decreases throughout the motion.

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

Once a day

Several a day

Twice a day

None of these

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

1.2 moon m

1.56

1.55

1.5

31. Geothermal energy with in the earth is generated by

Compression of material

All

Radio active decay

Residual heat of the earth

32. 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

Neither momentum nor kinetic energy is conserved in inelastic collisions

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

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

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

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

34. Which of the following is conservative field?

Viscous field

Frictional field

All of these

Electrostatic field

35. 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

Zero

400 J

36. 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

0.5Fv

Fv²

37. 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)

500 J

600 J

50 J

60 J

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

Negative work

No work

Positive work but

Maximum positive work

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

1.4 x 10⁸

1 x 10⁵

1.2 x 10⁶

1.3 x 10⁷

40. 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

41. The Escape velocity of Earth in Kms¯¹

9.75

15.6

11.2

12.3

42. 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

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

5 N

1/5 N

50,000 Nm

44. 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.

45. Power is a measure of the

Rate of change of energy

Force which produces motion

Rate of change of momentum

Change of energy

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

Its distance

Its path

Its potential energy

Its mass

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

42 W

21 W

2500 W

150 W

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

Kinetic energy

None of these

Escape velocity

Terminal velocity

49. The original source of geothermal energy is

Earth

Moon

Biomass

Fossil fuels

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

Energy produced in nuclear plants

Power of petrol engine

Electrical Energy

None of these

Page 3 of 3

51. The original source of tidal energy is

Sun

Tides

Moon

Waves

52. The unit of power is

Joule per second

Watt per second

Kilojoule

Joule

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

A man jumping onto a moving cart

Striking of two glass balls

A bullet striking a bag of sand

An electron captured by a proton

54. Reason of weightlessness in a satellite is

Zero gravity

None of these

Center of mass

Zero reaction force by satellite surface

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

Kinetic energy

Sound energy

Potential energy + kinetic energy

Potential energy

56. 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

57. 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

FGd

Zero

-FGd

58. The Escape velocity of Mars in Kms¯¹

5.23

5.00

2.89

3.99

59. SI unit of work is

N – m

N – MS¯²

N – ms¯¹

N – m²

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

Data is not sufficient

Light object

Both have the same momentum

Heavy object

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?

16:1

4:1

19:1

2:1

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

Work

Acceleration

Energy

Power

63. 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 actual path taken

The speed of the particle

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

Non-conservative field

None of these

Conservative fields

Varying intensity field

65. One Kilowatt hour is equal

3.6 x 10⁶ J

3.5 x 10⁵ J

3.5 x 10⁶ J

306 x 10⁵ 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

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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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