Question

Water is flowing through a horizontal tube of non-uniform cross section. At a place the radius of the tube is $1.0$ and the velocity of water is $2$. What will be the velocity of water, where the radius of the pipe is $2.0$?

• A. $1$
• B. $2$
• C. $0.5$
• D. $0.25$

Answer 1

The correct option is C $0.5$

We know,

$A_1{v}_1=A_2{v}_2$

$\pi 1^2\times 2=\pi 2^{2}v$

$v=0.5$

Option $\text{C}$ is the correct answer