Question

Bouncing back of sound into the same medium when it strikes any hard surface is :

(a)refraction (b)reflection (c)either a or b (d)reverberation

Answer 1

This is called reflection.

Multiple reflection occurs when there is no sound absorbing material prsent,called reverberation.
But in the given question ,Nothing is mentioned regarding the absorbing medium.

In simple cases,we called it reflection.