Which one of the following is the correct sound intensity expression with usual notations ?-A-dB = 10 log10 (I/I0)2B-dB = 10 log10 (I/I0)C-dB = 10 log10 (I I0)2D-dB = 10 log10 (I I0)-B-dB = 10 log10 (I/I0)

B dB = 10 log10 (I/I0) A is the correct option.