A man standing between two parallel cliffs and fires a gun and hears two successive echoes after 4 second and 6 second the distance between the cliffs is (Speed of sound 330 ms-1)

  (a)  1600 m  (b) 1650 cm  (c) 1650 m  (d)1590 m

 See ... its option C which is 1650 m ...

bcoz... use formula---- 2 * distance = speed of sound * time taken...

do it for both 4 s and 6 sec...

 you willl get 660 m and 990 metres,... add both to get total distance... ------ 1650 metres

  • 16

Shreyas's answer is right I agree with that

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i didnt understand :(
  • -11
Sherya kv said 2d=v*t but actual formula is d=v*t/2 is that we are using. She just changed the 2 into left hand side so,2d=v*t now u see what sheraya kv said then u can understand
  • -7
660 and 990
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660 and 990
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Idiotic question
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What if echoes are heard after every 1 sec? Answer is 510 m But I'm not getting it.
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it's (a) 1600
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Chutiyaaaaaaa question
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Chutiyaaaaaaa
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990m
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