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Questions  

A large cylindrical vessel filled with a liquid upto a certain height is emptied by a horizontal capillary tube, fitted to its base. Find the ratio of time taken to empty the tank by one half, to the next one fourth.

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

detailed solution

Correct option is A

t1t2=h−h2h2−h4=h[1−12]h2[1−12]=21 ⇒t1t2=21

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