Q.
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 separate drops in air as the first drop reaches the ground are
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a
1 m, 5 m, 7 m, 3 m
b
1 m, 3 m, 5 m, 7 m
c
1 m, 3 m, 7 m, 5 m
d
None of the above
answer is B.
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Detailed Solution
S1+S2+S3+S4=16 m, S1:S2:S3:S4=1:3:5:7Solve to get S1=1 m,S2=3 m, S3=5 m, S4=7 m
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