A tube of length L is shown in the figure. The radius of cross section at the point ( 1 ) is 2 cm and at the point (2) is 1 cm, respectively. If the…

A tube of length $\displaystyle L$ is shown in the figure. The radius of cross section at the point ( $\displaystyle 1$ ) is $\displaystyle 2$ cm and at the point ($\displaystyle 2$) is $\displaystyle 1$ cm, respectively. If the velocity of water entering at point ($\displaystyle 1$) is $\displaystyle 2$ m/s, then velocity of water leaving the point ($\displaystyle 2$) will be