Question

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. (a) 9 : 4
• A. (b) 3 : 2
• A. (c) $\sqrt { 3 } : \sqrt { 2 }$
• A. (d) $\sqrt { 2 } : \sqrt { 3 }$

Answer 1

(a) According to equation of continuity

Here,