16) Shruti went to hill station with her parents and her elder brother Rushi One day they were walking through a valley where shruti and her brotherstarted playing. Shruti was surprised to distinctly hear the same soundtwice. She discussed it with her brother. He told her that thisphenomenon is called "echo"a) Define echob) What should be the minimum distance from the source for a distantecho to be heard if the speed of sound is taken as 344 m/s in air at22°C and the time interval is 0.1s?c) Write the values shown by Rushil?

16) Shruti went to hill station with her parents and her elder brother

1.	16) Shruti went to hill station with her parents and her elder brother Rushi One day they were walking through a valley where shruti and her brotherstarted playing. Shruti was surprised to distinctly hear the same soundtwice. She discussed it with her brother. He told her that thisphenomenon is called "echo"a) Define echob) What should be the minimum distance from the source for a distantecho to be heard if the speed of sound is taken as 344 m/s in air at22°C and the time interval is 0.1s?c) Write the values shown by Rushil?
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