NEET Physics Mechanical Properties of Fluids Questions Solved

A rectangular vessel when full of water takes 10 minutes to be emptied through an orifice in its bottom. How much time will it take to be emptied when half filled with water
(a) 9 minute                        (b) 7 minute
(c) 5 minute                        (d) 3 minute

(b) Time taken to be emptied for h height, t=2hg

and for h2 height , t=2h/2g=hgt't=12t'=t2=102=7 minute 

Difficulty Level:

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