Home/ECAT/ECAT Physics Work and Energy Test Online

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

Please wait...

Page 1 of 3

Physics

1. 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 decreases throughout the motion.

None

It remains constant throughout the motion.

2. The relation between horse power and watt is

1 hp = 746 watts

1 hp = 946 watts

1 hp = 1000 watts

1 hp = 546 watts

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

21 W

42 W

2500 W

150 W

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

A proton

An electron

An a particle

A deuteron

5. 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

Both momentum and kinetic energy are conserved in all collisions

Momentum is conserved in all collisions but not kinetic energy

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?

0.5Fv²

0.5Fv

Fv²

7. 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 10⁹ J

3.5 x 10³ J

8. 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

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

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

Kinetic energy

Potential energy

Sound energy

Potential energy + kinetic energy

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

None of these

Twice a day

Several a day

Once a day

11. 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

12. 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

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

Potential energy

Kinetic energy

Electrical energy

Gravitational energy

14. The original source of tidal energy is

Sun

Tides

Waves

Moon

15. 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 N

19.6 m

19.6 kg

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

Escape velocity

None of these

Kinetic energy

Terminal velocity

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

Infinity

Minimum

Zero

Maximum

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

An electron captured by a proton

A man jumping onto a moving cart

Striking of two glass balls

A bullet striking a bag of sand

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

Light object

Data is not sufficient

Heavy object

Both have the same momentum

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

Its distance

Its potential energy

Its mass

Its path

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

1.2 moon m

1.55

1.5

1.56

22. The dimension of power is

[M²LT¯³]

[ML²T³]

[MLT]

[ML²T¯²]

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

Any rate

At uniform rate

At high rate

At variable rate

24. The original source of geothermal energy is

Moon

Earth

Biomass

Fossil fuels

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

38.2 J

3.92 J

39.2 J

392.1 J

Page 2 of 3

26. The atmosphere is held to the earth by

Gravity

The rotation of earth

Winds

Clouds

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

Minimum

Zero

Maximum

28. 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

50 J

Zero

-400 J

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

30°

90°

60°

0°

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

120

130

100

31. Power is a measure of the

Force which produces motion

Rate of change of momentum

Rate of change of energy

Change of energy

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

1 x 10⁹ J

1 x 10¹² J

1 x 10¹⁰ J

1 x 10¹¹ J

33. Reason of weightlessness in a satellite is

Zero gravity

Zero reaction force by satellite surface

Center of mass

None of these

34. 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

F/d

-Fd

35. The unit of power is

Joule

Watt per second

Joule per second

Kilojoule

36. Which of the following is conservative field?

Electrostatic field

Frictional field

All of these

Viscous field

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

Power

Acceleration

Energy

Work

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

Positive work but

Negative work

No work

Maximum positive work

39. 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.

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

1/5 N

5 N

50,000 Nm

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

¼ liter

1/6 liter

1/8 liter

1/5 liter

42. 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)

50 J

60 J

500 J

600 J

43. 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?

2:1

19:1

16:1

4:1

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

2.40

2.43

1.23

2.59

45. The original source of hydroelectric is

Water

Moon

Wind

Sun

46. The Escape velocity of Saturn in Kms¯¹

30.0

37.4

37.0

35.04

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

None of these

Varying intensity field

Conservative fields

Non-conservative field

48. 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

Cannot be concluded

Equal

Greater

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

Fv²

v/F

F/v

50. 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

Page 3 of 3

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

Electrical Energy

None of these

Energy produced in nuclear plants

Power of petrol engine

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

1100 m sec¯¹

11 x 10⁸ m sec¯¹

1100 m sec¯¹

11 m sec¯¹

53. The Escape velocity of Mars in Kms¯¹

5.23

3.99

5.00

2.89

54. One Kilowatt hour is equal

3.5 x 10⁵ J

3.6 x 10⁶ J

3.5 x 10⁶ J

306 x 10⁵ J

55. The Escape velocity of Earth in Kms¯¹

9.75

12.3

15.6

11.2

56. 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?

-400 J

Zero

400 J

50 J

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

Remains the same

Increases

Becomes zero

Decreases

58. 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.

mgh – f = ½ mV²

2mg – f = ½ mV²

None of these

mgh – f = ½ mV²

59. 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

60. The original source of biomass energy is

Moon

Sun

Geothermal

None of these

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

1.2 x 10⁶

1 x 10⁵

1.4 x 10⁸

1.3 x 10⁷

62. SI unit of work is

N – m

N – m²

N – MS¯²

N – ms¯¹

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

Sound

Light

Electric energy

Heat energy

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

None of these

Vector quantity

Constant quantity

Scalar quantity

65. Geothermal energy with in the earth is generated by

Compression of material

All

Radio active decay

Residual heat of the earth

You Can Learn and Gain more Knowledge through our Online Quiz and Testing system Just Search your desired Preparation subject at Gotest.

UET Peshawar Entry Test 2025 Registration Online ETEA Test D...
ECAT Statistics Test Set 17
ECAT Statistics Test Set 16
ECAT Statistics Test Set 15
ECAT Statistics Test Set 14
ECAT Statistics Test Set 13
ECAT Statistics Test Set 12
ECAT Statistics Test Set 11
ECAT Statistics Test Set 10
ECAT Statistics Test Set 9

Maan AliLast Updated: May 26, 2025

Facebook Twitter Reddit WhatsApp Share via Email Print

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

You Might Also Like

Maan Ali

11 Comments

Leave a Reply Cancel reply

Physics Work and Energy MCQS Online Test

ECAT Physics Work and Energy Chapter Online Test

ECAT Physics Work and Energy Test Online

Physics

You Might Also Like

Maan Ali

Your Related

ECAT Chemistry Gases 3 Test Online

ECAT Chemistry Alkyl Halides Test Online

ECAT Chemistry Chemical Equilibrium Test Online

NUST Rawalpindi ECAT Chemistry Entry Test Preparation Online

ECAT Computer Peripheral Devices Test Online

ECAT English Spotting Errors 5 Online Test

11 Comments

Leave a Reply Cancel reply