Waves in air, fluids and solids

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Question 20
Medium
a.

Which one of the statements about ultrasound waves and light waves is correct?

  • Ultrasound waves and light waves are both transverse.
  • Ultrasound waves and light waves are both longitudinal.
  • Ultrasound waves are transverse and light waves are longitudinal.
  • Ultrasound waves are longitudinal and light waves are transverse.
[1]
b.

An ocean hydrophone records the pressure vibrations caused by a low-frequency acoustic wave travelling through water. The figure below shows the vibration recorded over a period of time.

A wave trace recording of an acoustic wave showing exactly 5 complete sinusoidal oscillations (cycles) spanning a total marked time interval of 10 seconds.

Calculate the frequency of the wave shown in the trace.

[2]
c.

Write down the equation which links wave speed, frequency, and wavelength.

[1]
d.

The wave is travelling through seawater at a speed of 1500 m/s1500\text{ m/s}1500 m/s.

Calculate the wavelength of this wave.

[2]

Waves in air, fluids and solids Questions

  1. GCSE
  2. /Physics
  3. /Waves in air, fluids and solids