Physics – Multiple Choice Questions (MCQs)

1. 37. What is the speed of a wave?

   • A. Frequency times wavelength
   • B. Frequency divided by wavelength
   • C. Wavelength divided by frequency
   • D. Amplitude times frequency

2. 38. What is reflection of light?

   • A. The bending of light as it passes from one medium to another
   • B. The bouncing back of light from a surface
   • C. The splitting of white light into its constituent colors
   • D. The absorption of light by a surface

3. 39. What is refraction of light?

   • A. The bouncing back of light from a surface
   • B. The bending of light as it passes from one medium to another
   • C. The spreading of light waves
   • D. The interference of light waves

4. 40. What is dispersion of light?

   • A. The bending of light
   • B. The bouncing back of light
   • C. The splitting of white light into its constituent colors
   • D. The increase in the speed of light

5. 41. What is total internal reflection?

   • A. The complete reflection of light at the boundary between two media when the angle of incidence exceeds a certain critical angle
   • B. The partial reflection of light
   • C. The refraction of light at a large angle
   • D. The absorption of all light

6. 42. What are lenses used for?

   • A. To focus or diverge light
   • B. To block light
   • C. To produce sound
   • D. To measure temperature

7. 43. What are mirrors used for?

   • A. To bend light
   • B. To reflect light
   • C. To absorb light
   • D. To transmit light

8. 44. What is sound?

   • A. A form of mechanical wave that travels through a medium
   • B. A form of electromagnetic wave
   • C. A type of light
   • D. A stationary vibration

9. 45. Sound travels fastest in?

   • A. Vacuum
   • B. Liquids
   • C. Gases
   • D. Solids

10. 46. What is electricity?

    • A. The flow of electrons
    • B. A form of energy that cannot be controlled
    • C. A force that only acts on metals
    • D. A type of light

11. 47. What is electric current?

    • A. The rate of flow of electric charge
    • B. The total amount of charge
    • C. The force between charges
    • D. The energy carried by charges

12. 48. What is electric voltage?

    • A. The rate of flow of charge
    • B. The force between charges
    • C. The electric potential difference between two points
    • D. The total energy of charges