MCQs on Physical Quantities and Dimensions

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MCQs on Physical Quantities and Dimensions

1. What is the SI unit of length?

  • Meter
  • Kilogram
  • Second
  • Ampere

2. Which of these is not a fundamental quantity?

  • Time
  • Length
  • Mass
  • Velocity

3. What is the dimensional formula of force?

  • [M^0 L^1 T^-2]
  • [M^1 L^1 T^-2]
  • [M^1 L^2 T^-2]
  • [M^1 L^-1 T^-2]

4. Which of the following is the correct dimensional formula for energy?

  • [M^0 L^2 T^-1]
  • [M^1 L^0 T^-2]
  • [M^1 L^2 T^-2]
  • [M^1 L^1 T^-3]

5. What is the dimensional formula for power?

  • [M^1 L^2 T^-1]
  • [M^1 L^2 T^-3]
  • [M^0 L^2 T^-2]
  • [M^1 L^1 T^-2]

6. Which of the following quantities is dimensionless?

  • Velocity
  • Force
  • Energy
  • Refractive index

7. What is the SI unit of luminous intensity?

  • Joule
  • Newton
  • Candela
  • Watt

8. What is the dimensional formula for pressure?

  • [M^1 L^-1 T^-2]
  • [M^1 L^1 T^-2]
  • [M^0 L^2 T^-2]
  • [M^1 L^0 T^-2]

9. Which of the following has the dimensional formula [M^1 L^-2 T^-2]?

  • Energy
  • Work
  • Velocity
  • Stress

10. Which quantity has the dimensional formula [M^1 L^2 T^-2]?

  • Power
  • Pressure
  • Energy
  • Force

11. What is the dimensional formula of acceleration?

  • [M^0 L^2 T^-2]
  • [M^0 L^1 T^-2]
  • [M^1 L^1 T^-2]
  • [M^0 L^1 T^-1]

12. What is the SI unit of electric charge?

  • Volt
  • Ampere
  • Coulomb
  • Watt

13. Which physical quantity is measured in Pascal?

  • Energy
  • Pressure
  • Force
  • Power

14. What is the dimensional formula of angular velocity?

  • [M^0 L^1 T^-1]
  • [M^1 L^1 T^-2]
  • [M^1 L^0 T^-1]
  • [M^0 L^0 T^-1]

15. Which of the following quantities is not a scalar?

  • Acceleration
  • Mass
  • Temperature
  • Time

16. What is the dimensional formula of frequency?

  • [M^0 L^-1 T^1]
  • [M^0 L^1 T^0]
  • [M^0 L^0 T^-1]
  • [M^1 L^1 T^-1]

17. The SI unit of force is:

  • Newton
  • Joule
  • Watt
  • Pascal

18. Which of the following is the dimensional formula of momentum?

  • [M^1 L^2 T^-2]
  • [M^1 L^1 T^-1]
  • [M^0 L^1 T^-1]
  • [M^1 L^1 T^-2]

19. What is the dimensional formula of magnetic field strength?

  • [M^1 L^0 T^-2]
  • [M^1 L^1 T^-1]
  • [M^0 L^2 T^-2]
  • [M^1 T^-2 I^-1]

20. What is the SI unit of work?

  • Joule
  • Watt
  • Newton
  • Pascal

21. Which of the following has the dimensional formula [M^1 L^3 T^-2]?

  • Pressure
  • Force
  • Gravitational potential
  • Power

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