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MDCAT Physics Work and Energy Online Test

Malik TahirLast Updated: May 26, 2025

Physics Work and Energy MCQS Online Test

MDCAT 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:	MDCAT Entry Test Physics Online Test Interview Questions about Physics All Universities Entrance Test Recruitments Tests

MDCAT Physics Work and Energy Test Online

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Page 1 of 3

Physics

1. 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

-FGd

mgh

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

None of these

Power of petrol engine

Electrical Energy

Energy produced in nuclear plants

3. The original source of geothermal energy is

Moon

Fossil fuels

Earth

Biomass

4. 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

50 J

Zero

5. SI unit of work is

N – MS¯²

N – ms¯¹

N – m

N – m²

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

Varying intensity field

Conservative fields

None of these

Non-conservative field

7. 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

Greater

Cannot be concluded

Equal

8. 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

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

1.2 moon m

1.55

1.5

1.56

10. The relation between horse power and watt is

1 hp = 746 watts

1 hp = 1000 watts

1 hp = 546 watts

1 hp = 946 watts

11. The original source of hydroelectric is

Moon

Wind

Water

Sun

12. 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 10³ J

3.5 x 10⁶ J

3.5 x 10⁴ J

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

Heavy object

Both have the same momentum

Data is not sufficient

Light object

14. Which of the following is conservative field?

All of these

Electrostatic field

Frictional field

Viscous field

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

1/5 N

50,000 Nm

5 N

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

2500 W

150 W

42 W

21 W

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

Potential energy

Sound energy

Kinetic energy

Potential energy + kinetic energy

18. 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.

19. 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

50 J

-400 J

Zero

20. One Kilowatt hour is equal

3.5 x 10⁶ J

3.6 x 10⁶ J

306 x 10⁵ J

3.5 x 10⁵ J

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

2.40

2.59

2.43

1.23

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

Work

Acceleration

Energy

Power

23. 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

Zero

-Fd

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

Fv²

0.5Fv²

0.5Fv

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

The tie taken in this work

The speed of the particle

The height of the table

The actual path taken

Page 2 of 3

26. 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

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

No work

Positive work but

Negative work

Maximum positive work

28. 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

29. Reason of weightlessness in a satellite is

None of these

Center of mass

Zero gravity

Zero reaction force by satellite surface

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

Kinetic energy

None of these

Escape velocity

Terminal velocity

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

1/6 liter

1/8 liter

1/5 liter

¼ liter

32. The dimension of power is

[ML²T³]

[M²LT¯³]

[MLT]

[ML²T¯²]

33. The original source of tidal energy is

Sun

Moon

Tides

Waves

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

1100 m sec¯¹

11 m sec¯¹

1100 m sec¯¹

11 x 10⁸ m sec¯¹

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

v/F

F/v

Fv²

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

Sound

Light

Heat energy

Electric energy

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

130

120

100

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

1 x 10⁵

1.2 x 10⁶

1.4 x 10⁸

1.3 x 10⁷

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

90°

60°

30°

0°

40. 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

+ 490 Joules

+ 980 Joules

41. The atmosphere is held to the earth by

Gravity

Winds

The rotation of earth

Clouds

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

Decreases

Remains the same

Becomes zero

Increases

43. 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

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

Once a day

Several a day

Twice a day

None of these

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

Electrical energy

Potential energy

Gravitational energy

Kinetic energy

46. The Escape velocity of Mars in Kms¯¹

5.00

3.99

5.23

2.89

47. The Escape velocity of Earth in Kms¯¹

12.3

9.75

15.6

11.2

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

1 x 10¹⁰ J

1 x 10⁹ J

1 x 10¹² J

1 x 10¹¹ J

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

An a particle

A deuteron

A proton

An electron

50. The unit of power is

Joule per second

Joule

Kilojoule

Watt per second

Page 3 of 3

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

Infinity

Zero

Maximum

Minimum

52. 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.

53. 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

60 J

50 J

600 J

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

Any rate

At variable rate

At high rate

At uniform rate

55. Power is a measure of the

Rate of change of momentum

Change of energy

Force which produces motion

Rate of change of energy

56. The original source of biomass energy is

None of these

Moon

Geothermal

Sun

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

4.4 m/s

1 m/s

0.45 m/s

1.4 m/s

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

3.92 J

38.2 J

39.2 J

392.1 J

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

Zero

Minimum

Maximum

60. 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

4:1

2:1

61. The Escape velocity of Saturn in Kms¯¹

37.4

30.0

35.04

37.0

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

Scalar quantity

Constant quantity

None of these

Vector quantity

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

Its mass

Its potential energy

Its distance

Its path

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

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

65. Geothermal energy with in the earth is generated by

All

Compression of material

Residual heat of the earth

Radio active decay

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Malik TahirLast Updated: May 26, 2025

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4 Comments

Hoorain says:

August 5, 2022 at 12:25 am

Why is it saying that electric force does no work whereas it is actually centripetal force which does no work on the body.

salman says:

August 24, 2021 at 10:49 am

why is it wrong?
magnitude of work =Fdcos tita

Asfand yar says:

June 9, 2017 at 8:32 am

Test =good
Mcqs 11 difficult
Ans with reason please with formula

1. sohali says:
  
  August 12, 2022 at 6:47 pm
  
  the answer of 11 is in Punjab text book

MDCAT Physics Work and Energy Online Test

Physics Work and Energy MCQS Online Test

MDCAT Physics Work and Energy Chapter Online Test

MDCAT Physics Work and Energy Test Online

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Physics Work and Energy MCQS Online Test

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