Q. 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 end in a streamline flow
D) The liquid flows with uniform velocity in the tube
Explanation
(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 narrow end speed will be high.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.