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

Minimum

Zero

Maximum

2. 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?

4:1

16:1

19:1

2:1

3. The relation between horse power and watt is

1 hp = 546 watts

1 hp = 946 watts

1 hp = 746 watts

1 hp = 1000 watts

4. 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 10⁶ J

3.5 x 10³ J

3.5 x 10⁴ J

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

Light

Heat energy

Electric energy

Sound

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

1 x 10⁹ J

1 x 10¹¹ J

1 x 10¹² J

1 x 10¹⁰ J

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

Remains the same

Becomes zero

Increases

Decreases

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

The speed of the particle

The height of the table

The tie taken in this work

The actual path taken

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.

2mg – f = ½ mV²

None of these

mgh – f = ½ mV²

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

Kinetic energy

Terminal velocity

None of these

Escape velocity

11. Power is a measure of the

Rate of change of energy

Rate of change of momentum

Force which produces motion

Change of energy

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

¼ liter

1/6 liter

1/5 liter

1/8 liter

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

A bullet striking a bag of sand

An electron captured by a proton

Striking of two glass balls

A man jumping onto a moving cart

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

Negative work

No work

Maximum positive work

Positive work but

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

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

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

120

100

130

17. 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

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

Vector quantity

Scalar quantity

Constant quantity

None of these

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

Energy produced in nuclear plants

Electrical Energy

Power of petrol engine

None of these

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

Maximum

Minimum

Infinity

Zero

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)

+ 490 Joules

+ 980 Joules

- 490 Joules

- 980 Joules

22. SI unit of work is

N – ms¯¹

N – m²

N – m

N – MS¯²

23. The original source of tidal energy is

Sun

Waves

Moon

Tides

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

150 W

21 W

42 W

2500 W

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

Fv²

v/F

F/v

Page 2 of 3

26. 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

50 J

-400 J

27. The dimension of power is

[M²LT¯³]

[MLT]

[ML²T¯²]

[ML²T³]

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

Its potential energy

Its path

Its mass

Its distance

29. The Escape velocity of Saturn in Kms¯¹

37.4

30.0

37.0

35.04

30. Which of the following is conservative field?

Frictional field

Electrostatic field

Viscous field

All of these

31. 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

32. 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

Zero

400 J

50 J

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

30°

60°

90°

0°

34. The unit of power is

Joule per second

Watt per second

Kilojoule

Joule

35. 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

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

4.4 m/s

0.45 m/s

1.4 m/s

1 m/s

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

Potential energy + kinetic energy

Sound energy

Kinetic energy

Potential energy

38. 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

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

None of these

Once a day

Twice a day

Several a day

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

1.4 x 10⁸

1.3 x 10⁷

1 x 10⁵

1.2 x 10⁶

41. 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

42. Reason of weightlessness in a satellite is

Center of mass

Zero gravity

Zero reaction force by satellite surface

None of these

43. 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

Equal

Cannot be concluded

Greater

Less

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

11 x 10⁸ m sec¯¹

11 m sec¯¹

1100 m sec¯¹

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

1.5

1.56

1.55

1.2 moon m

46. The original source of geothermal energy is

Fossil fuels

Biomass

Earth

Moon

47. 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

48. 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

49. Which of the following is true?

Neither momentum nor kinetic energy is conserved in inelastic 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

Both momentum and kinetic energy are conserved in all collisions

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

Potential energy

Electrical energy

Gravitational energy

Kinetic energy

Page 3 of 3

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

38.2 J

392.1 J

39.2 J

3.92 J

52. The Escape velocity of Earth in Kms¯¹

12.3

11.2

15.6

9.75

53. The original source of biomass energy is

Sun

Geothermal

Moon

None of these

54. One Kilowatt hour is equal

306 x 10⁵ J

3.6 x 10⁶ J

3.5 x 10⁶ J

3.5 x 10⁵ J

55. The original source of hydroelectric is

Sun

Wind

Moon

Water

56. The Escape velocity of Mars in Kms¯¹

5.00

3.99

5.23

2.89

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

Power

Work

Acceleration

Energy

58. The atmosphere is held to the earth by

Gravity

Winds

Clouds

The rotation of earth

59. 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 J

19.6 N

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

A deuteron

An a particle

An electron

A proton

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

At high rate

At variable rate

Any rate

At uniform rate

62. Geothermal energy with in the earth is generated by

Residual heat of the earth

Compression of material

Radio active decay

All

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

2.43

2.40

1.23

2.59

64. 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.

None

It decreases throughout the motion.

It increases throughout the motion

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

Varying intensity field

Non-conservative field

None of these

Conservative fields

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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

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Physics Work and Energy MCQS Online Test

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