When we change a feeble sound to a loud sound,we increase its:

If the frequency of a tuning fork is $400 \, Hz$ and the speed of sound in air is $340 \, m s^{-1}$,find how far sound travels when the tuning fork makes $16$ vibrations. (in $, m$)

Why are the ceiling and the wall behind the stage of good conference halls or concert halls made curved?

How does a stretched string,on being set into vibration,produce an audible sound?

Define echo. Establish a mathematical relation between speed of sound, distance of reflecting body from source of sound, and time for echo.

The walls of a hall built for musical concert should