Physics fundamentals - Question Bank

1. The SI unit of the gravitational constant (G) is:
A) Newton meter squared per kilogram squared
B) Newton per kilogram squared
C) Meter cubed per kilogram second squared
D) Both A and C
2. 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
3. The SI unit of Planck's constant is:
A) Joule-second
B) Joule per Hertz
C) Both A and B
D) Watt-second
4. 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
5. 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
6. 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
7. The SI unit of magnetic field strength (or magnetic intensity) is:
A) Tesla
B) Weber
C) Ampere per meter
D) Gauss
8. What is the SI unit of illuminance?
A) Lumen
B) Candela
C) Lux
D) Nit
9. The SI unit of luminous flux is:
A) Lux
B) Candela
C) Lumen
D) Steradian
10. What is the SI unit of equivalent dose or dose equivalent of ionizing radiation?
A) Gray
B) Rad
C) Sievert
D) Roentgen
11. The SI unit of absorbed dose of ionizing radiation is:
A) Becquerel
B) Sievert
C) Gray
D) Rad
12. What is the SI unit of radioactivity (activity)?
A) Gray
B) Becquerel
C) Sievert
D) Curie
13. The SI unit of dynamic viscosity is:
A) Poise
B) Stokes
C) Pascal-second
D) Newton-second per meter squared
14. What is the SI unit of kinematic viscosity?
A) Stokes
B) Poise
C) Pascal-second
D) Newton-second per meter squared
15. The SI unit of solid angle is:
A) Radian
B) Degree
C) Steradian
D) Gradian
16. What is the SI unit of the coefficient of linear expansion?
A) Per meter
B) Per Kelvin
C) Per meter-Kelvin
D) Kelvin
17. 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
18. What is the SI unit of torque?
A) Newton
B) Joule
C) Newton-meter
D) Watt
19. The SI unit of impulse is:
A) Newton-second
B) Joule
C) Watt
D) Pascal
20. What is the SI unit of surface tension?
A) Newton per meter
B) Joule per square meter
C) Pascal
D) Dyne per centimeter
21. The phenomenon of bending of light around obstacles is known as:
A) Interference
B) Diffraction
C) Polarization
D) Scattering
22. What is the SI unit of magnetic flux?
A) Tesla
B) Gauss
C) Weber
D) Henry
23. The SI unit of capacitance is:
A) Farad
B) Henry
C) Coulomb
D) Volt
24. What is the SI unit of inductance?
A) Farad
B) Weber
C) Henry
D) Tesla
25. The SI unit of electric charge is:
A) Ampere
B) Volt
C) Ohm
D) Coulomb
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 sound intensity is:
A) Decibel
B) Watt per square meter
C) Hertz
D) Pascal
28. What is the SI unit of viscosity?
A) Poise
B) Pascal-second
C) Stokes
D) Newton-second
29. Which principle explains the working of a hydraulic press?
A) Archimedes' Principle
B) Pascal's Principle
C) Bernoulli's Principle
D) Hooke's Law
30. The SI unit of magnetic flux density is:
A) Weber
B) Tesla
C) Gauss
D) Henry
31. What is the SI unit of electric potential difference (voltage)?
A) Ampere
B) Ohm
C) Coulomb
D) Volt
32. The phenomenon where light bends as it passes from one medium to another is called:
A) Reflection
B) Diffraction
C) Refraction
D) Interference
33. What is the SI unit of angular velocity?
A) Radian per second
B) Meter per second
C) Degree per second
D) Revolution per minute
34. The SI unit of wavelength is:
A) Hertz
B) Meter
C) Second
D) Newton
35. 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
36. What is the SI unit of luminous intensity?
A) Lumen
B) Lux
C) Candela
D) Steradian
37. The SI unit of temperature is:
A) Celsius
B) Fahrenheit
C) Kelvin
D) Rankine
38. 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
39. What is the SI unit of frequency?
A) Hertz
B) Second
C) Radian
D) Cycle
40. The SI unit of power is:
A) Joule
B) Watt
C) Newton
D) Second
41. Which of the following is a vector quantity?
A) Mass
B) Speed
C) Distance
D) Velocity
42. What is the SI unit of resistance?
A) Ampere
B) Volt
C) Ohm
D) Watt
43. The SI unit of electric current is:
A) Volt
B) Ohm
C) Ampere
D) Coulomb
44. Momentum is the product of mass and:
A) Force
B) Acceleration
C) Velocity
D) Energy
45. What is the SI unit of pressure?
A) Joule
B) Newton
C) Watt
D) Pascal
46. 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
47. The rate of doing work is defined as:
A) Energy
B) Momentum
C) Power
D) Torque
48. What is the SI unit of energy?
A) Newton
B) Joule
C) Watt
D) Pascal
49. 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
50. Which of the following is a scalar quantity?
A) Velocity
B) Acceleration
C) Force
D) Speed
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