Question
a large open tank has two holes in the wall. one is a square hole of side L at a depth Y from the top and the other is a circular hole of radius R At a depth 4Y from the top . when the tank is completely filled with H2O , the quantities of H2O flowing / sec from both holes are same . then R IS equal to??
ans L / [√(2π)]
Joshi sir comment
speed of water from any hole = √2gh
so volume of water per sec. = A√2gh
for square hole volume/sec = L2√2gY
for circular hole volume/sec = πR2√2g4Y
compare and get answer