<prompt> Most common frequency of Tuning fork used in ENT:256 Hz512 Hz1024 Hz2048 Hz  <response>: Ans. b 512 HzRef: Dhingras ENT 5th ed. 26 Tuning fork test can be performed using tuning fork of different frequencies such as: 128, 256, 512, 1024, 2048, 4096 Hz. MC used ideal for routine clinical practice is of 512 Hz. Tuning fork of lower frequencies produce sense of bone vibration while those of higher frequencies have a shorter decay time and are thus not routinely preferred. Tests done with tuning fork: Rinnes test Webers test Absolute bone conduction ABC test Bing test Gellestest Lewis test 