Question
a person is standing between two vertical walls. he heard the echo of his sound after t = 1s and t = 1.5s. distance between walls is (speed of sound in air = 340ms‾¹
Joshi sir comment
time taken by the sound to reach upto the first wall = 0.5 sec
similarly time taken by the sound to reach upto the second wall = 0.75
so total time = 1.25 sec. so distance between the walls = 340 * 1.25 = 425