A stationary observer receives Sonic oscillations from two tuning forks one of which approaches and the other receipts with same speed as this takes place the observer hears The Beat frequency of 2 Hertz find the speed of each tuning fork( assuming it is very small when compared to sound) if there are solutions frequency is 680 Hertz and the velocity of sound in air is 340m/s. A) 1 m per second B) 2m/s C)0.5m/s D) 1.5m/s