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`        Two men at P and Q are in front of a cliff. P is 340 m away from the cliff and Q is 340 m away from P. The man at P sounds a whistle continuously for half a second. What is the direction of hearing the sound of echo by P? What is the time gap between the two sounds that Q hears?`
2 years ago

## Answers : (1)

Sanjeev Soneji
17 Points
```							1.Towards Himself.2.solutionAssuming velocity of sound be 340 msLet the first whistle heard by Q at time T1Let the second whistle heard(echo) be heard at T2T1=340/340=1 secT2=3x340/340=3 secAlso we would also consider the half second of whistle heard Therefore gap would be 3-1-1/2=3/2 sec
```
2 years ago
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