A water spray gun is attached to a hose of cross sectional area 30 . The gun comprises of 10 perforations

Question

A water spray gun is attached to a hose of cross sectional area 30 ${cm}^{2}$ . The gun comprises of 10 perforations each of cross sectional area of 15 ${mm}^{2}$ . If the water flows in this hose with the speed of 50 cm/s, calculate the speed at which the water flows out from each perforation. (Neglect any edge effects) [2026]

Smart Achievers · Accepted Answer

(2)

$Using equation of continuity, A V = 10 a v$

$\Rightarrow v = \frac{A V}{10 a} = \frac{30 \times 50}{10 \times 0.15} = 1000 cm/s = 10 m/s$

Solution

1 100 m/s

2 10 m/s

3 1000 m/s

4 $15 \times 10^{2}$ m/s

Ans.
(2)

$Using equation of continuity, A V = 10 a v$

$\Rightarrow v = \frac{A V}{10 a} = \frac{30 \times 50}{10 \times 0.15} = 1000 cm/s = 10 m/s$

Want Us to Email you About Special Offers & Updates?