Loudness of the sound is directly related to
Correct answer: A. Intensity of sound
- A. Intensity of sound
- B. Frequency of sound
- C. Wavelength of sound
- D. Pitch of sound
Explanation
The loudness of a sound relates the intensity of any given sound to the intensity at the threshold of hearing. It is measured in decibels (dB). The threshold of human hearing has an intensity of about . 0000000000001 watts per metre squared and corresponds to 0 decibels.
This question appeared on the NUMS 2022 paper, which you can sit online with every answer explained.
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Progressive waves transfer energy through a medium or space while particles oscillate about their equilibrium positions. The work includes amplitude, wavelength, frequency, period, phase difference, wave speed and the progressive wave equation, while distinguishing travelling waves from stationary waves, where the pattern has fixed nodes and antinodes.
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