The intensity level (sound level) of faintest audible intensity is:
Correct answer: B. Zero decibel
- A. 160 decibel
- B. Zero decibel
- C. 140 decibel
- D. 120 decibel
- E. 60 decibel
Explanation
The faintest audible intensity corresponds to a sound level of: Zero decibel. Zero decibel (0 dB) represents the threshold of human hearing, which is the lowest sound intensity that the average human ear can detect. So option B is the correct answer.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Waves
Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
Practise Waves
1,281 free Waves MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Waves questions
Two transverse travelling waves are presented by these equations:y1 = A sin(kx- ωt) and y2 = A sin(ωt−kx-theta). These two waves differ in:
The velocity of sound in air at NTP is 332 ms−1. The velocity of sound in vacuum is:
The velocity of sound in air is independent of:
A sound wave travels from one medium to another, which one of the following characteristic of sound remains unchanged?
Distance between two consecutive antinodes in standing wave is:
Which of the following increase by increasing amplitude?