Class 8 Physics MCQ Questions


Top Class 8 Physics MCQ Questions with Answers

Here is the list of some more than 50 Class 8 MCQ Questions with answers. Practice these important easy to advanced class 8 MCQ Questions for your CBSE Board Exam and other competitive Exams.

class 8 physics mcq questions

Note: The Answers/Explanations are provided at the bottom of the article or questions.

1. What is the SI Unit of Pressure?

a) Pascal

b) N/m2

c) Both a and b

d) None of the above

2. What is the SI Unit of Force?

a) newton

b) kgms-2

c) dyne

d) a and b

3. Which of the following is a unit of power?

a) Ohm

b) Ampere

c) Volt

d) Watt

4. What is the name of the device used to measure wind speed?

a) Barometer

b) speedometer

c) Anemometer

d) All of the above

5. Which of the following is used to measure time?

a) second

b) week

c) month

d) All the above

6. What is the SI unit of force?

a) Newton
b) Joule
c) Kilogram
d) Watt

7. Which of the following is a unit of electric current?

a) Ohm
b) Ampere
c) Volt
d) Watt

8. What is the boiling point of water in Celsius?

a) 100 °C
b) 0 °C
c) 50 °C
d) 212 °C

9. What is the speed of light in a vacuum?

a) 300,000 m/s
b) 150,000 m/s
c) 3,000 m/s
d) 30,000 m/s

10. Which of the following is NOT a type of simple machine?

a) Lever
b) Pulley
c) Magnet
d) Inclined plane

11. What is the formula for calculating speed?

a) Speed = Distance × Time
b) Speed = Time ÷ Distance
c) Speed = Distance ÷ Time
d) Speed = Time + Distance

12. Which of the following materials is a good conductor of electricity?

a) Plastic
b) Rubber
c) Copper
d) Glass

13. What is the SI unit of power?

a) Watt
b) Joule
c) Newton
d) Ohm

14. What happens to the speed of an object if the force acting on it increases?

a) Speed decreases
b) Speed remains constant
c) Speed increases
d) Speed becomes zero

15. Which of the following is a form of energy produced by the movement of electrons?

a) Mechanical energy
b) Thermal energy
c) Electrical energy
d) Chemical energy

16. The resistance of a conductor depends on its:

a) Length and thickness
b) Length and temperature
c) Temperature and thickness
d) Temperature and material

17. Which law of motion states, “Every action has an equal and opposite reaction”?

a) Newton’s First Law
b) Newton’s Second Law
c) Newton’s Third Law
d) Kepler’s Law

18. What type of energy does a stretched rubber band have?

a) Kinetic energy
b) Potential energy
c) Mechanical energy
d) Thermal energy

19. What is the SI unit of electric charge?

a) Ampere
b) Volt
c) Coulomb
d) Ohm

20. When light is refracted, it:

a) Bends away from the normal
b) Bends towards the normal
c) Travels in a straight line
d) Reflects off the surface

21. What is the energy possessed by a body due to its motion called?

a) Kinetic energy
b) Potential energy
c) Electrical energy
d) Thermal energy

22. Which of the following is NOT a renewable source of energy?

a) Solar energy
b) Wind energy
c) Fossil fuels
d) Hydroelectric energy

23. Which of the following is a scalar quantity?

a) Velocity
b) Acceleration
c) Distance
d) Force

24. Which of the following is the correct formula for calculating work done?

a) Work = Force × Distance
b) Work = Force ÷ Distance
c) Work = Distance ÷ Force
d) Work = Force + Distance

25. What is the SI unit of frequency?

a) Hertz
b) Watt
c) Joule
d) Ohm

26. Which of the following is a good conductor of heat?

a) Plastic
b) Wood
c) Aluminum
d) Rubber

27. What is the unit of measurement for potential difference?

a) Volt
b) Ampere
c) Ohm
d) Joule

28. Which of the following devices converts electrical energy into mechanical energy?

a) Generator
b) Motor
c) Transformer
d) Capacitor

29. What is the force of attraction between any two objects with mass called?

a) Friction
b) Tension
c) Gravity
d) Magnetism

30. Which of the following is an example of a non-contact force?

a) Friction
b) Tension
c) Muscular Force
d) Magnetism

31. What is the acceleration due to gravity on the surface of the Earth?

a) 9.8 m/s²
b) 6.67 × 10¹¹ Nm²/kg²
c) 3.0 × 10⁸ m/s²
d) 1.0 m/s²

32. Which of the following is NOT a type of electromagnetic wave?

a) Radio waves
b) Sound waves
c) X-rays
d) Gamma rays

33. What is the process of converting a solid directly into a gas called?

a) Evaporation
b) Condensation
c) Sublimation
d) Melting

34. Which of the following statements about concave mirrors is true?

a) They always produce virtual images.
b) They always produce real images.
c) They can produce both real and virtual images.
d) They do not produce images.

35. What is the SI unit of magnetic field strength?

a) Tesla
b) Joule
c) Ohm
d) Watt

36. What is the SI unit of pressure?

a) Pascal
b) Newton
c) Joule
d) Kilogram

37. Which of the following materials is a good insulator of electricity?

a) Copper
b) Aluminum
c) Rubber
d) Silver

38. What is the force exerted by a surface perpendicular to the surface called?

a) Frictional force
b) Tension force
c) Normal force
d) Gravitational force

39. Which of the following is an example of a contact force?

a) Magnetic Force
b) Electrostatic Force
c) Tension Force
d) Gravitational Force

40. What is the process of a liquid changing into a gas at its boiling point called?

a) Melting
b) Evaporation
c) Condensation
d) Sublimation

41. Which of the following is NOT a type of simple harmonic motion?

a) Pendulum motion
b) Spring motion
c) Circular motion
d) Oscillatory motion

42. What is the measure of the amount of matter in an object called?

a) Mass
b) Weight
c) Volume
d) Density

43. Which of the following is an example of a non-inertial frame of reference?

a) A car moving at a constant speed on a straight road
b) A car accelerating on a curved road
c) A train moving at a constant speed on a straight track
d) A train decelerating on a straight track

44. What is the SI unit of magnetic flux?

a) Tesla
b) Weber
c) Henry
d) Ampere

45. Which of the following statements about convex lenses is true?

a) They always produce virtual images.
b) They always produce real images.
c) They can produce both real and virtual images.
d) They do not produce images.

46. What is the property of a body to resist any change in its state of motion called?

a) Inertia
b) Acceleration
c) Velocity
d) Force

47. Which of the following statements about series circuits is true?

a) The total resistance is equal to the sum of individual resistances.
b) The total current is equal in all branches.
c) The total voltage is equal in all branches.
d) Adding more bulbs decreases the total resistance.

48. What is the process of conversion of a gas into a liquid called?

a) Condensation
b) Evaporation
c) Sublimation
d) Melting

49. Which of the following is NOT a fundamental force in nature?

a) Gravitational force
b) Electromagnetic force
c) Strong nuclear force
d) Weak nuclear force

50. What is the term for the force exerted by a fluid on an object immersed in it?

a) Buoyant force
b) Tension force
c) Frictional force
d) Normal force

51. Which law of motion states, “An object at rest will remain at rest, and an object in motion will remain in motion unless acted upon by an external force”?

a) Newton’s First Law
b) Newton’s Second Law
c) Newton’s Third Law
d) Kepler’s Law

52. Which of the following is NOT a characteristic of a wave?

a) Amplitude
b) Frequency
c) Volume
d) Wavelength

53. What is the unit of measurement for wavelength?

a) Meter
b) Hertz
c) Joule
d) Angstrom

54. Which of the following statements about the Law of Conservation of Energy is true?

a) Energy can be created but not destroyed.
b) Energy can be destroyed but not created.
c) Energy cannot be created or destroyed, only transformed from one form to another.
d) Energy remains constant regardless of any transformations.

55. What is the SI unit of work?

a) Joule
b) Watt
c) Newton
d) Ohm

Note: More Questions will be Added Soon

Answers/Explanation

Here are the answers to the multiple-choice questions:

  1. c) Both (a) and (b)
  2. d) a and b
  3. d) Watt
  4. c) Anemometer
  5. d) All the above
  6. a) Newton
  7. b) Ampere
  8. a) 100°C
  9. a) 300,000 m/s
  10. c) Magnet
  11. c) Speed = Distance ÷ Time
  12. c) Copper
  13. a) Watt
  14. c) Speed increases
  15. c) Electrical energy
  16. a) Length and thickness
  17. c) Newton’s Third Law
  18. b) Potential energy
  19. c) Coulomb
  20. a) Bends away from the normal
  21. a) Kinetic energy
  22. c) Fossil fuels
  23. c) Distance
  24. a) Work = Force × Distance
  25. a) Hertz
  26. c) Aluminum
  27. a) Volt
  28. b) Motor
  29. c) Gravity
  30. d) Magnetism
  31. a) 9.8 m/s2
  32. b) Sound waves
  33. c) Sublimation
  34. c) They can produce both real and virtual images.
  35. a) Tesla
  36. a) Pascal
  37. c) Rubber
  38. c) Normal force
  39. c) Tension force
  40. b) Evaporation
  41. c) Circular motion
  42. a) Mass
  43. b) A car accelerating on a curved road
  44. b) Weber
  45. c) They can produce both real and virtual images.
  46. a) Inertia
  47. a) The total resistance is equal to the sum of individual resistances.
  48. a) Condensation
  49. d) Weak nuclear force
  50. a) Buoyant force
  51. a) Newton’s First Law
  52. c) Volume
  53. a) Meter
  54. c) Energy cannot be created or destroyed, only transformed from one form to another.
  55. a) Joule