Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 11

Water enters through end A with a speed v1 and leaves through end B with a speed v2 of a cylindrical tube AB. - Physics

MCQ

Water enters through end A with a speed v1 and leaves through end B with a speed v2 of a cylindrical tube AB. The tube is always completely filled with water. In case I the tube is horizontal, in case II it is vertical with the end A upward and in case III it is vertical with the end B upward. We have v1 = v2 for

• case I

• case II

• case III

•  each case

Solution

each case

This happens in accordance with the equation of continuity.
As the area of the cross section of cylindrical tube AB is constant, the velocity of water will also be the same. The equation is derived from the principle of conservation of mass and it is true for every case, i.e., when the tube is either horizontal or vertical.

Concept: Introduction to Fluid Machanics
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APPEARS IN

HC Verma Class 11, 12 Concepts of Physics 1
Chapter 13 Fluid Mechanics
MCQ | Q 18 | Page 272