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Doctors Medicines MCQs Q&A

  1. Frequency
  2. Wavelength
  3. Amplitude
  4. Pitch
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1 Answers

Option 3 : Amplitude

The correct answer is option 3 i.e Amplitude

  • Loudness depends on the amplitude of the sound wave. The larger the amplitude the more energy the sound wave contains therefore the louder the sound. 
  • Loudness is a subjective term that describes the strength of the ear's perception of the sound. The greater the sound energy reaching our ears per second, the louder the sound will appear to be.
  • If the sound waves have small amplitude, then the sound will be faint or soft but if the waves have a large amplitude, then the sound will be loud. The loudness of sound is measured in decibel (dB). It depends on the sensitivity or the response or the response of our ears.
  • It's SI unit is watt/meter.
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