If a sound note has intensity (I), equals to faintest audible sound (I₀), then will be it's sound level?
- 20 dB
- 10 dB
- 0 dB
- None of these
Explanation
The sound level β (in dB) is given by:
β = 10 log(I / I₀)
where I₀ is the threshold intensity (faintest audible sound). Given I = I₀:
β = 10 log(1) = 0 dB
Related MCQs
- The point will always lie on the y-axis.
- The point will always lie on the x-axis.
- The point will always lie in the first quadrant.
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 21
- 22
- 23
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 17
- 15
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- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
