Physics · Acoustics
Determine whether the following statements regarding sound are true or false: (I) A medium is necessary for the propagation of sound. (II) The unit of frequency of sound is Hertz. (III) The loudness of sound is expressed in the decibel unit.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(I), (II), (III) are false
- 2Only (II) is true
- 3Only (I) and (II) are true
- 4(I), (II), (III) are true✓
Correct answer
(I), (II), (III) are true
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