6. The speed of light in a vacuum is approximately:
a) 3,000 m/s
b) 300,000 m/s
c) 30,000,000 m/s
d) 3,000,000,000 m/s
7. The wavelength of a wave is defined as:
a) The distance between two consecutive crests or troughs
b) The distance between two consecutive compressions or rarefactions
c) The distance between two consecutive nodes
d) The distance between two consecutive antinodes
8. The frequency of a wave is defined as:
a) The distance between two consecutive crests or troughs
b) The distance between two consecutive compressions or rarefactions
c) The number of crests or troughs passing a point in one second
d) The number of compressions or rarefactions passing a point in one second
9. The amplitude of a wave is a measure of:
a) The energy of the wave
b) The frequency of the wave
c) The speed of the wave
d) The distance between crests or troughs
10. Which of the following waves require a medium to propagate?
a) Longitudinal waves
b) Transverse waves
c) Both longitudinal and transverse waves
d) None of the above
