Physics – Multiple Choice Questions (MCQs)

1. 25. What is Archimedes' Principle?

   • A. An object submerged in a fluid is buoyed up by a force equal to the weight of the fluid displaced by the object
   • B. Energy is conserved in fluid flow
   • C. Pressure in a fluid at rest is the same at all points at the same depth
   • D. The volume of a gas is directly proportional to its temperature at constant pressure

2. 26. What is Pascal's Law?

   • A. Pressure applied to a fluid in a closed container is transmitted equally to every point in the fluid and to the walls of the container
   • B. The buoyant force on an object is equal to the weight of the fluid displaced
   • C. The speed of a fluid increases as its pressure decreases
   • D. The volume of a gas is inversely proportional to its pressure at constant temperature

3. 27. What is heat?

   • A. A form of energy transfer due to a temperature difference
   • B. The internal energy of a system
   • C. The average kinetic energy of molecules
   • D. The measure of hotness or coldness

4. 28. What is temperature?

   • A. A measure of the average kinetic energy of the particles in a substance
   • B. The total internal energy of a substance
   • C. The rate of heat transfer
   • D. The amount of heat contained in a substance

5. 29. What is conduction?

   • A. Heat transfer through the movement of fluids
   • B. Heat transfer through direct contact
   • C. Heat transfer through electromagnetic waves
   • D. Heat transfer through phase change

6. 30. What is convection?

   • A. Heat transfer through direct contact
   • B. Heat transfer through electromagnetic waves
   • C. Heat transfer through the movement of fluids
   • D. Heat transfer in a vacuum

7. 31. What is radiation?

   • A. Heat transfer through a solid medium
   • B. Heat transfer through liquids only
   • C. Heat transfer through electromagnetic waves
   • D. Heat transfer requiring direct contact

8. 32. What are transverse waves?

   • A. Waves in which the particles of the medium oscillate parallel to the direction of wave propagation
   • B. Waves in which the particles of the medium oscillate perpendicular to the direction of wave propagation
   • C. Waves that travel in a straight line
   • D. Waves that do not require a medium

9. 33. What are longitudinal waves?

   • A. Waves in which the particles of the medium oscillate parallel to the direction of wave propagation
   • B. Waves that travel in a curved path
   • C. Waves that require a solid medium
   • D. Waves with high frequency

10. 34. What is wavelength?

    • A. The distance between two successive crests or troughs of a wave
    • B. The height of a wave
    • C. The speed of a wave
    • D. The number of waves passing a point per unit time

11. 35. What is frequency?

    • A. The distance between crests
    • B. The height of a wave
    • C. The number of waves passing a point per unit time
    • D. The speed of a wave

12. 36. What is amplitude?

    • A. The distance between crests
    • B. The maximum displacement or height of a wave from its equilibrium position
    • C. The speed of a wave
    • D. The number of waves