CAPE Physics Unit 1 · 2007 · Paper 1 · Question Q27

A motorbike emits an 80\text{ dB} noise. The intensity of the sound from the motorbike is

1. (A)10^{-12}\text{ W m}^{-2}
2. (B)10^{-8}\text{ W m}^{-2}
3. (C)10^{-4}\text{ W m}^{-2}
4. (D)10\text{ W m}^{-2}