An ideal fluid flows through a pipe of circular cross-section made of two sections with diameters 2.5 cm and 3.75 cm. The ratio of the velocities in the two pipes is a) 9:4 b) 3:2 c) √3: √2 d) √2: √3
Correct option is A) According to equation of continuity A1v1=A2v2 v2v1=A2A1=πD12/4πD22/4=(D1D2)2 Here, D1=2.5cm,D2=3.75cm ∴v2v1=(2.53.75)2=(23)2=49
