The echo and original sound will have same

The echo and the original sound differ in the following characteristics of a musical note

Choose the correct option? The echo and the original sound differ in the following characteristics in musical note A. intensity B. quality C. pitch D. All of the above

The echo of a sound is heard after 5 seconds. If the speed of sound in air be 342m/s, calculate the distance of the reflecting surface.

Why is an echo weaker than the original sound ?

Why is an echo weaker than the original sound ?

The echo will be heard if the original sound reflected by an obstacle reaches our ears after

To hear the echo distinctly,will the distance from the source of sound to the reflecting surface be same at all temperatures? Explain your answer.