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A large tank filled with water to a height ‘h’ is to be emptied through a small hole at the bottom. The ratio of the time taken for the level to fall from h to h4  and that taken for the level to fall from h4  to 0 is

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a
1:2
b
2:1
c
1:1
d
3:1

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detailed solution

Correct option is C

t1∝h1−h2⇒t1t2=h−h4h4−0=h(1−12)h(12)  t1t2=2−1212=1212=1:1


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