Q.1
Wave frequency is measured in which unit?
  • Hertz
  • Seconds
  • Wave-seconds
  • Gauss
Q.2
A keyboard player plays a note of 440 Hz. What does this mean?
  • It is painfully loud
  • It cannot be heard by human ears
  • 440 waves reach the listener's ear each second
  • It has an amplitude of 440 cm
Q.3
If a wave of 440 Hz travels at 340 m/s, what is its wavelength?
  • 0.772 m
  • 0.772 Hz
  • 1.29 m
  • 14.96 km
Q.4
What is the wavelength of the microwaves used by a cell phone operator that uses microwaves with a frequency of 1.8 x 10 Hz and which travel at a speed of 3.0 x 10 m/s to transmit their signals?
  • 17 cm
  • 17 m
  • 1.7 cm
  • 1.7 m
Q.5
Electromagnetic waves travel through space at a speed of 3.0 x 10 m/s. The radio waves emitted from a distant galaxy have a wavelength of 25 meters. What is the frequency of the radio waves emitted from the galaxy?
  • 8.33 MHz
  • 8.33 x 108 Hz
  • 12 MHz
  • 12 mhz
Q.6
Electromagnetic waves travel at a speed of 3.0 x 10 m/s through the air. A radio station transmits using waves with a wavelength of 1.9 x 10 m. At what frequency would you need to set your radio to receive this particular station's programs?
  • 1578 m
  • 1578 Mhz
  • 1578 kHz
  • 1.578 kHz
Q.7
A group of students carried out an experiment using a ripple tank. They measured the frequency of a wave as being 14 Hz with a total of 20 wave crests in the tank. The tank was 40 cm long. How fast was the wave traveling?
  • 28 m/s
  • 2.8 m/s
  • 0.28 cm/s
  • 0.28 m/s
Q.8
What is the wavelength of the musical note middle C? It has a frequency 256 Hz and the speed of sound is 335 m/s.
  • 131 cm
  • 13.1 m
  • 0.76 m
  • 7.6 cm
Q.9
Waves are diffracted when they pass through a gap that is about the same width as their wavelength. What width of gap would be required to cause microwaves of frequency 1.5 x 10 Hz to diffract?
  • 1 m
  • 2 cm
  • 3 km
  • 4 mm
Q.10
Snakes swim by vibrating their body from side to side, just like a transverse wave. The faster they vibrate, the faster they move through the water. A 90 cm long snake in a lake travels with a velocity of 1.8 m/s. At what frequency does it vibrate its body?
  • 1 Hz
  • 2 Hz
  • 3 Hz
  • 4 Hz
0 h : 0 m : 1 s