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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. 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

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

1.3 x 10⁷

1.2 x 10⁶

1 x 10⁵

1.4 x 10⁸

3. 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

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

Minimum

Maximum

Infinity

Zero

5. SI unit of work is

N – MS¯²

N – m²

N – ms¯¹

N – m

6. 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

None of these

2mg – f = ½ mV²

7. Reason of weightlessness in a satellite is

Zero reaction force by satellite surface

Center of mass

None of these

Zero gravity

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

Acceleration

Energy

Power

Work

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

1.56

1.5

1.55

1.2 moon m

10. Geothermal energy with in the earth is generated by

All

Compression of material

Residual heat of the earth

Radio active decay

11. 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 m

19.6 N

19.6 kg

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

Kinetic energy

Gravitational energy

Electrical energy

Potential energy

13. 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

392.1 J

39.2 J

14. The Escape velocity of Saturn in Kms¯¹

30.0

37.4

35.04

37.0

15. 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.

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

Zero

Maximum

Minimum

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

The speed of the particle

The tie taken in this work

The height of the table

The actual path taken

18. The relation between horse power and watt is

1 hp = 746 watts

1 hp = 946 watts

1 hp = 546 watts

1 hp = 1000 watts

19. 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

2:1

16:1

4:1

20. The dimension of power is

[ML²T¯²]

[ML²T³]

[MLT]

[M²LT¯³]

21. 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

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

A deuteron

An a particle

An electron

A proton

23. The Escape velocity of Mars in Kms¯¹

5.23

2.89

5.00

3.99

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

2500 W

21 W

42 W

150 W

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

11 x 10⁸ m sec¯¹

1100 m sec¯¹

11 m sec¯¹

Page 2 of 3

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

Both have the same momentum

Data is not sufficient

Heavy object

Light object

27. 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.

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

Its distance

Its path

Its potential energy

Its mass

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

None of these

Varying intensity field

Non-conservative field

Conservative fields

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

Light

Electric energy

Sound

Heat energy

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

Terminal velocity

Escape velocity

None of these

Kinetic energy

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

Increases

Decreases

Remains the same

Becomes zero

33. The original source of biomass energy is

Moon

Sun

None of these

Geothermal

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

F/v

v/F

Fv²

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?

-400 J

400 J

Zero

50 J

36. 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

Greater

Cannot be concluded

Equal

Less

37. The original source of tidal energy is

Waves

Sun

Tides

Moon

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

Several a day

None of these

Twice a day

Once a day

39. 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?

50 J

400 J

-400 J

Zero

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

2.43

1.23

2.40

2.59

41. 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

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

130

120

100

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

At high rate

Any rate

At uniform rate

At variable rate

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

Vector quantity

Constant quantity

Scalar quantity

None of these

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

1/8 liter

¼ liter

1/5 liter

1/6 liter

46. The unit of power is

Watt per second

Joule

Joule per second

Kilojoule

47. Power is a measure of the

Change of energy

Rate of change of energy

Force which produces motion

Rate of change of momentum

48. Which of the following is conservative field?

All of these

Electrostatic field

Frictional field

Viscous field

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

None of these

Electrical Energy

Power of petrol engine

Energy produced in nuclear plants

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

Positive work but

Maximum positive work

No work

Negative work

Page 3 of 3

51. The original source of geothermal energy is

Fossil fuels

Earth

Biomass

Moon

52. The Escape velocity of Earth in Kms¯¹

12.3

15.6

11.2

9.75

53. The original source of hydroelectric is

Wind

Water

Moon

Sun

54. 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

mgh

Zero

FGd

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

0.45 m/s

4.4 m/s

1 m/s

1.4 m/s

56. 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

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

30°

0°

90°

60°

58. 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

59. 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

60. 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

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

Sound energy

Kinetic energy

Potential energy

Potential energy + kinetic energy

62. 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

600 J

60 J

500 J

63. The atmosphere is held to the earth by

Gravity

Winds

The rotation of earth

Clouds

64. 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

65. One Kilowatt hour is equal

3.6 x 10⁶ J

3.5 x 10⁶ J

3.5 x 10⁵ J

306 x 10⁵ J

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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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