1. Echo of sound depends upon the temperature of the surrounding and distance between source and reflecting surface.
2. To hear a distinct echo at 22 °C, the minimum distance required between...
Given: s = 40m, v = 330 m/s
To Find: time (t)
Formula: Time = distance \(\frac{distance}{speed}\)
Calculation:
The distance travelled by the sound wave
= 2 × distance from man to wall.
= 2 × 40...
