Question

गिवन एयरप्लेन टू स्लो टेक्नोलॉजी यूज्ड फॉर प्रोसेस​

Answer 1

Sound is produced from a place at a known distance say, d at least 50 m from the reflecting surface. The time interval t in which the echo reaches the place from where the sound was produced, is noted by a stop watch having the least count 0.01 s. then the speed of sound is calculated by using the following relation.