Question

A liquid having area of free surface 'A' has an orifice at a depth 'h' with an area 'a' below liquid surface, then the velocity V of flow through the orifice is -

• A. $\sqrt { 2 \mathrm { gh } }$
• B. $\sqrt { 2 \mathrm { gh } }$
• C. $\sqrt { 2 \mathrm { gh } }$
• D. None of these

Answer 1

Answer: (B)

$\sqrt { 2 \mathrm { gh } }$

Answer 2

P + $\frac { 1 } { 2 }$rV² + rgh = P + $\frac { 1 } { 2 }$v² + 0 ……….(i)

also AV = av ………(ii)