Fluid Mechanics Viscosity Question 118

Question: 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

Options:

A) Hole number 4

B) Hole number 3

C) Hole number 2

D) Hole number 1

Show Answer

Answer:

Correct Answer: B

Solution:

Horizontal range will be maximum when $ h=\frac{H}{2}=\frac{90}{2} $ = 45 cm i.e. hole 3.