Question

A liquid is allowed into a tube of truncated cone shape. Identify the correct statement from the following.

• A. The speed is high at the wider end and low at the narrow end
• B. The speed is low at the wider end and high at the narrow end
• C. The speed is same at both ends in a stream line flow
• D. The liquid flows with uniform velocity in the tube

Answer 1

Answer: (B)

For an incompressible liquid equation of continuity $Av$ = constant or $A\propto \frac{1}{v} $ Therefore, at the wider end speed will be low and at the narrow end speed will be high.