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

Acceleration

Work

Power

Energy

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

Light object

Both have the same momentum

Data is not sufficient

Heavy object

3. 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

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

Electrical energy

Potential energy

Gravitational energy

Kinetic energy

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

Potential energy + kinetic energy

Potential energy

Sound energy

Kinetic energy

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

1.2 moon m

1.55

1.5

1.56

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

Kinetic energy

Escape velocity

Terminal velocity

None of these

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

60°

90°

30°

0°

9. One Kilowatt hour is equal

3.6 x 10⁶ J

3.5 x 10⁵ J

306 x 10⁵ J

3.5 x 10⁶ J

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

Electrical Energy

None of these

Energy produced in nuclear plants

Power of petrol engine

11. Which of the following is true?

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

Both momentum and kinetic energy are conserved in all collisions

12. The original source of geothermal energy is

Moon

Fossil fuels

Biomass

Earth

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

Non-conservative field

Conservative fields

Varying intensity field

None of these

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

2500 W

42 W

21 W

150 W

15. 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

Less

Greater

16. 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

17. 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 10³ J

3.5 x 10⁹ J

3.5 x 10⁶ J

18. The original source of tidal energy is

Tides

Sun

Moon

Waves

19. 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

20. 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

mgh – f = ½ mV²

None of these

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

Its path

Its distance

Its potential energy

Its mass

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

The height of the table

The tie taken in this work

The actual path taken

The speed of the particle

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

None of these

Several a day

Twice a day

Once a day

24. Power is a measure of the

Rate of change of momentum

Force which produces motion

Change of energy

Rate of change of energy

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

Positive work but

Maximum positive work

No work

Negative work

Page 2 of 3

26. The relation between horse power and watt is

1 hp = 1000 watts

1 hp = 546 watts

1 hp = 746 watts

1 hp = 946 watts

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

2.59

1.23

2.40

2.43

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

100

120

130

29. The Escape velocity of Earth in Kms¯¹

12.3

11.2

15.6

9.75

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

At variable rate

At high rate

Any rate

At uniform rate

31. 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

32. 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.

> P.E.

Cannot be known

33. 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

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

Becomes zero

Remains the same

Decreases

Increases

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

0.45 m/s

4.4 m/s

1.4 m/s

1 m/s

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

Electric energy

Heat energy

Light

Sound

37. 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

400 J

Zero

38. The Escape velocity of Mars in Kms¯¹

5.23

2.89

5.00

3.99

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

1 x 10¹² J

1 x 10¹¹ J

1 x 10¹⁰ J

1 x 10⁹ J

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

Constant quantity

None of these

Vector quantity

Scalar quantity

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

F/v

Fv²

v/F

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

Maximum

Minimum

Infinity

Zero

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

1.4 x 10⁸

1.3 x 10⁷

1.2 x 10⁶

1 x 10⁵

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

19.6 m

19.6 kg

19.6 N

19.6 J

45. The dimension of power is

[ML²T³]

[M²LT¯³]

[ML²T¯²]

[MLT]

46. 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

47. Which of the following is conservative field?

Viscous field

Frictional field

Electrostatic field

All of these

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

A bullet striking a bag of sand

Striking of two glass balls

An electron captured by a proton

A man jumping onto a moving cart

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

1/5 liter

¼ liter

1/6 liter

1/8 liter

50. SI unit of work is

N – m

N – m²

N – MS¯²

N – ms¯¹

Page 3 of 3

51. 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

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

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

52. The original source of biomass energy is

Geothermal

Sun

None of these

Moon

53. The atmosphere is held to the earth by

Gravity

Clouds

The rotation of earth

Winds

54. 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

+ 490 Joules

- 980 Joules

55. Reason of weightlessness in a satellite is

Zero gravity

Center of mass

Zero reaction force by satellite surface

None of these

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

392.1 J

39.2 J

38.2 J

3.92 J

57. The original source of hydroelectric is

Sun

Wind

Water

Moon

58. The unit of power is

Kilojoule

Joule

Watt per second

Joule per second

59. The Escape velocity of Saturn in Kms¯¹

37.0

35.04

30.0

37.4

60. Geothermal energy with in the earth is generated by

All

Residual heat of the earth

Compression of material

Radio active decay

61. 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 remains constant throughout the motion.

It increases throughout the motion

It decreases throughout the motion.

None

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

Zero

Minimum

Maximum

63. 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

64. 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

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

An a particle

A deuteron

A proton

An electron

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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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