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1. |
A man standing in between two parallel cliffs produces a sound and first echo is heard after 2 seconds and second echo is heard after 3 second. If the speed of sound in air 340 m/s. Find the distance between two cliffs. |
A. | 425 m |
B. | 170 m |
C. | 850 m |
D. | 340 m |
Answer» D. 340 m | |