True or false the minimum distance between a source amd the reflector of sound should be 34m.
Answers
Answer:
it's false because
Explanation:
the minimum distance from reflector is 16.6
Answer:
False , The minimum distance between source and reflector should be 17m to hear an echo.
Explanation:
We have sometimes noticed ,that at certain places like in vacant house ,buildings , at mountains etc , we can hear our sound again .
That phenomenon is ECHO .
Echo : It is the repetition of sound on striking the surface of reflector .
Suppose the sound is produced from a source and it hits the distant obstacle and then returns back .
Due to this, we hear the reflected sound also .
To hear an echo :
Total distance traveled by sound x + x =2x
Total time taken by reflector sound to return to receiver is minimum =0.1sec
Speed =Distance /time
343 =2x /0.1
x = 343 x 0.1 /2 = 17m (approx.)