Sound, ultrasound and infrasound

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Question 13
Easy

A gardener wants to use a high-frequency sound emitter to deter wild rabbits from entering a vegetable patch.

Figure 1 shows how the hearing threshold (the minimum sound level a species can detect) varies with frequency for both humans and wild rabbits.

A graph showing curves of hearing threshold in dB on the y-axis (from 0 to 100) against frequency in kilohertz (kHz) on the x-axis (from 0 to 40). The curve for humans has its minimum at 3 kHz. The curve for wild rabbits has its lowest point (representing its minimum threshold and highest sensitivity) at a frequency of exactly 16 kHz.

State the frequency at which the rabbits' hearing is most sensitive. Give the appropriate unit.

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Sound, ultrasound and infrasound Questions

  1. GCSE
  2. /Physics
  3. /Sound, ultrasound and infrasound