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CBSE Class 9 Answered

Sunil is standing between two walls.the wall closest to him is at a distance of 360 m. if he shouts , he hears the first echo after 4s and another 2 second . What is the veocity of sound in air ? What is the distance between the two walls
Asked by Shivapujenitesa | 16 Dec, 2018, 07:12: PM
Expert Answer
Solution is attached 
Answered by Ankit K | 16 Dec, 2018, 10:13: PM
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