Igcse Model Questions Vol1 2019 Physics Question 28
Practice objective / multiple choice question 28 from the 2019 Igcse Model Questions Vol1 Physics examination.
A speaker produces an intensity of \(1.0\times10^{-2}\ \text{W m}^{-2}\) at a distance of 2.0 m. Assuming spherical spreading and no absorption, at what distance from the speaker will the intensity level be \(60\ \text{dB}\)? (Take the reference intensity \(I_{0}=1.0\times10^{-12}\ \text{W m}^{-2}\).) Give your answer in metres to 2 s.f.
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About This Question
This is Igcse Model Questions Vol1 2019 Physics Question 28. It is one of the objective questions from the 2019 Igcse Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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