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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. The original source of tidal energy is

Sun

Moon

Waves

Tides

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

1.55

1.56

1.2 moon m

1.5

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

Escape velocity

Terminal velocity

Kinetic energy

None of these

4. 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

-Fd

F/d

5. 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

6. 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

50 J

-400 J

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

Electric energy

Sound

Heat energy

Light

8. The original source of geothermal energy is

Fossil fuels

Earth

Biomass

Moon

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

392.1 J

3.92 J

39.2 J

38.2 J

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

An a particle

An electron

A proton

A deuteron

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

At high rate

At uniform rate

At variable rate

Any rate

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

None of these

Energy produced in nuclear plants

Electrical Energy

Power of petrol engine

13. Power is a measure of the

Force which produces motion

Rate of change of energy

Rate of change of momentum

Change of energy

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

Work

Acceleration

Power

Energy

15. The relation between horse power and watt is

1 hp = 946 watts

1 hp = 746 watts

1 hp = 546 watts

1 hp = 1000 watts

16. 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

2:1

16:1

19:1

17. Geothermal energy with in the earth is generated by

Radio active decay

Residual heat of the earth

Compression of material

All

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

Kinetic energy

Potential energy

Potential energy + kinetic energy

Sound energy

19. The atmosphere is held to the earth by

Gravity

Clouds

Winds

The rotation of earth

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

Its potential energy

Its distance

Its path

Its mass

22. The Escape velocity of Earth in Kms¯¹

9.75

15.6

12.3

11.2

23. Which of the following is true?

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 kinetic energy is conserved only in inelastic collisions

Momentum is conserved in all collisions but not kinetic energy

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

Twice a day

None of these

Once a day

Several a day

25. 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.

Page 2 of 3

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

Heavy object

Light object

Data is not sufficient

Both have the same momentum

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?

It increases throughout the motion

It remains constant throughout the motion.

None

It decreases throughout the motion.

28. 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

mgh – f = ½ mV²

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

The speed of the particle

The actual path taken

The tie taken in this work

The height of the table

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

130

100

120

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

Zero

Maximum

Minimum

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

Gravitational energy

Potential energy

Kinetic energy

Electrical energy

33. SI unit of work is

N – m²

N – ms¯¹

N – MS¯²

N – m

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

19.6 N

19.6 kg

19.6 J

19.6 m

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

1.23

2.59

2.40

2.43

36. 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

500 J

60 J

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

A bullet striking a bag of sand

A man jumping onto a moving cart

Striking of two glass balls

An electron captured by a proton

38. 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

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

1 x 10¹⁰ J

1 x 10⁹ J

1 x 10¹¹ J

1 x 10¹² J

40. 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?

Zero

50 J

400 J

-400 J

41. The unit of power is

Joule

Joule per second

Kilojoule

Watt per second

42. 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?

mgh

-FGd

Zero

FGd

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

Becomes zero

Increases

Remains the same

Decreases

44. The original source of biomass energy is

Geothermal

None of these

Moon

Sun

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

Scalar quantity

None of these

Constant quantity

Vector quantity

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

1.3 x 10⁷

1 x 10⁵

1.4 x 10⁸

1.2 x 10⁶

47. One Kilowatt hour is equal

3.5 x 10⁶ J

306 x 10⁵ J

3.6 x 10⁶ J

3.5 x 10⁵ J

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

4.4 m/s

1.4 m/s

1 m/s

0.45 m/s

49. Which of the following is conservative field?

Electrostatic field

Frictional field

Viscous field

All of these

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

2500 W

21 W

150 W

42 W

Page 3 of 3

51. The Escape velocity of Mars in Kms¯¹

5.23

2.89

3.99

5.00

52. 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

Gain in P.E = Loss in K.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

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

Varying intensity field

None of these

Non-conservative field

Conservative fields

54. Reason of weightlessness in a satellite is

None of these

Center of mass

Zero reaction force by satellite surface

Zero gravity

55. The dimension of power is

[ML²T³]

[MLT]

[M²LT¯³]

[ML²T¯²]

56. The Escape velocity of Saturn in Kms¯¹

35.04

37.4

30.0

37.0

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

No work

Negative work

Maximum positive work

Positive work but

58. The original source of hydroelectric is

Moon

Water

Sun

Wind

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

1100 m sec¯¹

11 m sec¯¹

11 x 10⁸ m sec¯¹

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

5 N

1/5 N

50,000 Nm

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

30°

90°

0°

60°

62. 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 10⁹ J

3.5 x 10³ J

3.5 x 10⁶ J

63. 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

Equal

Cannot be concluded

Less

64. 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

Fv²

0.5Fv

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

Fv²

F/v

v/F

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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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