Q.1
In addition to being reflected and refracted, how can waves also be manipulated?
  • Diffused
  • Diffracted
  • Heated
  • By freezing
Q.2
What units is frequency measured in?
  • Hertz
  • Metres
  • Coulombs
  • Volts
Q.3
The period of a wave , if the time period for a wave of wavelength 500 mm is 0.5 seconds, at what speed is the wave travelling?
  • 1 x 1010 m/s
  • 0.25 m/s
  • 0.5 m/s
  • 1 m/s
Q.4
What is the formula of the wave equation?
  • v=fλ
  • v=λ⁄f
  • v=f⁄λ
  • f=λ⁄v
Q.5
Calculate the frequency of a wave with a speed of 3 x 10 m/s and a wavelength of 1 x 10 m.
  • 30 Hz
  • 300 Hz
  • 3000 Hz
  • 3 x 1010 Hz
Q.6
Which of the following is a characteristic of a longitudinal wave?
  • It contains areas of compression and rarefaction
  • It contains both electric and magnetic waves
  • It contains electric waves
  • It contains magnetic waves
Q.7
Calculate the wavelength of an electromagnetic wave that has a frequency of 10 kHz.
  • 30 m
  • 30 km
  • 300 km
  • 300 m
Q.8
Calculate the speed of a wave with a frequency of 3 Hz and a wavelength of 100 x 10 m.
  • 300 x 10-9 m/s
  • 33 x 10-9 m/s
  • 300 x 10-8 m/s
  • 300 x 109 m/s
Q.9
What types of waves are used for communications?
  • Radio waves
  • Microwaves
  • Light waves
  • All of the above
Q.10
What are the SI units of wavelength?
  • Inches
  • Metres
  • Feet
  • Hertz
0 h : 0 m : 1 s