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Question 14
a.

A plane sound wave in air is incident on a flat, solid barrier and reflects. State how each of the following properties of the sound wave changes, if at all, upon reflection:

(i) Wavelength

(ii) Frequency

(iii) Direction of travel

[3]
b.

From the list of statements below, identify the three statements that are true for a sound wave audible to a healthy human ear:

  • A: The sound wave is a transverse wave.
  • B: The sound wave is a longitudinal wave.
  • C: The frequency of the wave can be 150 Hz150\text{ Hz}150 Hz.
  • D: The wave can propagate through a vacuum.
  • E: The wave can propagate through a solid metal like iron.
  • F: The frequency of the wave can be 30 kHz30\text{ kHz}30 kHz.
[3]
c.

State a typical value for:

(i) The speed of sound in air at room temperature.

(ii) The speed of sound in a solid metal (such as iron or steel).

[2]
Markscheme

Sound Questions

  1. IGCSE
  2. /Physics
  3. /Sound

295 exam-style questions on CIE IGCSE Physics Sound, covering Sound. Each one has a worked solution and a mark scheme showing where the marks go.

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