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soldier standing between two hills hears two echoes after firing the gun. The first echo was heard after 1.2 s and the second echo after 2.4 secs. Find the distance between the two hills. (velocity=340 m/s) * |
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Answer» Correct OPTION is A 1320 m DISTANCE of PERSON from NEARER cliff, (d1) =2v×t⇒d1=2330×3=495m Distance of person from farther cliff, d2=2v×t d2=2330×5=825m Total distance between two cliffs =d1+d2 =(495+825) =1320m. |
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