Question

give reason we hear louder sound in a newly built room than in a furnished room
​

Answer 1

Answer:

This is due to echo, because in empty room there is continuous reflection of sound waves occur but in furnished room there are many sound absorbing materials therefore echo do not occur.

Answer 2

Answer:

We hear sound more clearly in a furnished room than in an empty room. ... This is due to echo, because in empty room there is continuous reflection of sound waves occur but in furnished room there are many sound absorbing materials therefore echo do not occur.