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Drops of water fall at regular intervals from roof of a building of height H = 16 m, the first drop striking the ground at the same moment as the fifth drop detaches itself from the roof. The distances between the drops when the first drop reaches the ground are

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None of the above

1 m, 3 m, 7 m, 5 m

1 m, 3 m, 5 m, 7 m

1 m, 5 m, 7 m, 3 m

answer is B.

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Detailed Solution

$S_{1} + S_{2} + S_{3} + S_{4} = 16 m$ . as they are falling at regular interval of time their distance traveled are in the ratio 1:4:9:16 so separation will be $1 : (4 - 1) : (9 - 4) : (16 - 9)$

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