The frequency produced by a tuning fork is 41.5
Given:
frequency produced by a tuning fork, v = 41.5 hz
time period of the fork = (1/41.5) sec now its mentioned that the tuning fork makes such 20 vibrations so total time of the event, t = (20/41.5) sec --------------------------(1)
Since
Speed of sound, s = 340 m/s -----------------(2)
Hence
Distance travelled = s × t meters