ENT General 361ac9e6 Rinne's test is negative if minimum deafness is - A 15-20 dB B 25-30 dB C 35-40 dB D 15-50 dB High-Yield Explanation As discussed in the text in Rinnies test—air conduction of the ear is compared with its bone conduction. Hence there is false negative Rinne test (BC > AC).