RRB Group D - Physics fundamentals Online Test (MCQ Quiz)

1. What is the SI unit of force?

A) Joule B) Watt C) Newton D) Pascal

2. Which of the following is a scalar quantity?

A) Velocity B) Acceleration C) Force D) Speed

3. According to Newton's first law of motion, an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force. This is also known as the law of:

A) Momentum B) Inertia C) Action and Reaction D) Gravity

4. What is the SI unit of energy?

A) Newton B) Joule C) Watt D) Pascal

5. The rate of doing work is defined as:

A) Energy B) Momentum C) Power D) Torque

6. Which law states that for every action, there is an equal and opposite reaction?

A) Newton's First Law B) Newton's Second Law C) Newton's Third Law D) Law of Conservation of Energy

7. What is the SI unit of pressure?

A) Joule B) Newton C) Watt D) Pascal

8. Momentum is the product of mass and:

A) Force B) Acceleration C) Velocity D) Energy

9. The SI unit of electric current is:

A) Volt B) Ohm C) Ampere D) Coulomb

10. What is the SI unit of resistance?

A) Ampere B) Volt C) Ohm D) Watt

11. Which of the following is a vector quantity?

A) Mass B) Speed C) Distance D) Velocity

12. The SI unit of power is:

A) Joule B) Watt C) Newton D) Second

13. What is the SI unit of frequency?

A) Hertz B) Second C) Radian D) Cycle

14. According to Archimedes' principle, the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces. This principle is fundamental to understanding:

A) Magnetism B) Buoyancy C) Surface Tension D) Viscosity

15. The SI unit of temperature is:

A) Celsius B) Fahrenheit C) Kelvin D) Rankine

16. What is the SI unit of luminous intensity?

A) Lumen B) Lux C) Candela D) Steradian

17. Ohm's Law relates voltage, current, and resistance. It states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them. Mathematically, it is represented as:

A) V = I / R B) V = R / I C) I = V / R D) I = R / V

18. The SI unit of wavelength is:

A) Hertz B) Meter C) Second D) Newton

19. What is the SI unit of angular velocity?

A) Radian per second B) Meter per second C) Degree per second D) Revolution per minute

20. The phenomenon where light bends as it passes from one medium to another is called:

A) Reflection B) Diffraction C) Refraction D) Interference

21. What is the SI unit of electric potential difference (voltage)?

A) Ampere B) Ohm C) Coulomb D) Volt

22. The SI unit of magnetic flux density is:

A) Weber B) Tesla C) Gauss D) Henry

23. Which principle explains the working of a hydraulic press?

A) Archimedes' Principle B) Pascal's Principle C) Bernoulli's Principle D) Hooke's Law

24. What is the SI unit of viscosity?

A) Poise B) Pascal-second C) Stokes D) Newton-second

25. The SI unit of sound intensity is:

A) Decibel B) Watt per square meter C) Hertz D) Pascal

26. What is the SI unit of angular acceleration?

A) Radian per second squared B) Meter per second squared C) Degree per second squared D) Revolution per minute squared

27. The SI unit of electric charge is:

A) Ampere B) Volt C) Ohm D) Coulomb

28. What is the SI unit of inductance?

A) Farad B) Weber C) Henry D) Tesla

29. The SI unit of capacitance is:

A) Farad B) Henry C) Coulomb D) Volt

30. What is the SI unit of magnetic flux?

A) Tesla B) Gauss C) Weber D) Henry

31. The phenomenon of bending of light around obstacles is known as:

A) Interference B) Diffraction C) Polarization D) Scattering

32. What is the SI unit of surface tension?

A) Newton per meter B) Joule per square meter C) Pascal D) Dyne per centimeter

33. The SI unit of impulse is:

A) Newton-second B) Joule C) Watt D) Pascal

34. What is the SI unit of torque?

A) Newton B) Joule C) Newton-meter D) Watt

35. The SI unit of specific heat capacity is:

A) Joule per kilogram B) Joule per Kelvin C) Joule per kilogram-Kelvin D) Watt per kilogram

36. What is the SI unit of the coefficient of linear expansion?

A) Per meter B) Per Kelvin C) Per meter-Kelvin D) Kelvin

37. The SI unit of solid angle is:

A) Radian B) Degree C) Steradian D) Gradian

38. What is the SI unit of kinematic viscosity?

A) Stokes B) Poise C) Pascal-second D) Newton-second per meter squared

39. The SI unit of dynamic viscosity is:

A) Poise B) Stokes C) Pascal-second D) Newton-second per meter squared

40. What is the SI unit of radioactivity (activity)?

A) Gray B) Becquerel C) Sievert D) Curie

41. The SI unit of absorbed dose of ionizing radiation is:

A) Becquerel B) Sievert C) Gray D) Rad

42. What is the SI unit of equivalent dose or dose equivalent of ionizing radiation?

A) Gray B) Rad C) Sievert D) Roentgen

43. The SI unit of luminous flux is:

A) Lux B) Candela C) Lumen D) Steradian

44. What is the SI unit of illuminance?

A) Lumen B) Candela C) Lux D) Nit

45. The SI unit of magnetic field strength (or magnetic intensity) is:

A) Tesla B) Weber C) Ampere per meter D) Gauss

46. What is the SI unit of electric field strength?

A) Volt per meter B) Newton per Coulomb C) Both A and B D) Ampere per meter

47. The SI unit of magnetic permeability is:

A) Henry per meter B) Tesla meter per Ampere C) Both A and B D) Farad per meter

48. What is the SI unit of electric permittivity?

A) Farad per meter B) Henry per meter C) Coulomb squared per Newton-meter squared D) Both A and C

49. The SI unit of Planck's constant is:

A) Joule-second B) Joule per Hertz C) Both A and B D) Watt-second

50. What is the SI unit of the Stefan-Boltzmann constant?

A) Watt per square meter B) Watt per square meter per Kelvin to the power of 4 C) Joule per second D) Newton per meter

Physics fundamentals - Online Test

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