Question

what is echo ? what is it due to? what is the minimum distance to hear? what is peristance of hearing? please fast ​

Answer 1

WHAT IS ECHO ?

Echo means a sound repeated or a sound that arrives at the listener with a delay after the direct sound.

WHAT IS IT CAUSED DuE TO ?

An echo is made by sound waves bouncing off a hard surface. The sound waves are typically absorbed before they hit something hard that they can bounce off of . this process leads to echoing of something.

WHAT IS THE MINIMUM DISTANCE TO HEAR?

To hear an echo, the time difference should be a minimum of 0.1 second. Speed of sound at 20 degree C is 343 m/s . Distance that sound travels in 0.1 s is 34.3 m . If the time is less than 0.1 s , the first sound being still in memory , we hear a prolonged sound called reverberation sound.

What Is Peristance Of Hearing?

The sensation of hearing of any sound persist in our brain for 0.1 seconds. This phenomenon is known as persistence of hearing.

please fast?

time lagta hai bro...

Thanks

mark branliest

@join the army of the shadows