Q. 18

# Water enters through end A with a speed u_{1} and leaves through end B with a speed u_{2} 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 v_{1} = v_{2} for

A. case I

B. case II

C. case III

D. each case

Answer :

From the equation of continuity, the volume of water entering should be equal to the volume leaving. As the cross-sectional area(A) is same in all three cases, from , in all three cases.

Rate this question :

Water is flowing in streamline motion through a tube with its axis horizontal. Consider two points A and B in the tube at the same horizontal level.

HC Verma - Concepts of Physics Part 1Water flows through two identical tubes A and B. A volume V_{0} of water passes through the tube A and 2 V_{0} through B in a given time. Which of the following may be correct?

Iceberg floats in water with part of it submerged. What is the fraction of the volume of iceberg submerged if the density of ice is ρi = 0.917 g cm^{-3}?

Water flows through a horizontal tube as shown in figure (13-E9). If the difference of heights of water column in the vertical tubes is 2 cm, and the areas of cross section at A and B are 4 cm^{2} and 2 cm^{2} respectively, find the rate of flow of water across any section.

HC Verma - Concepts of Physics Part 1

Bernoulli theorem is based on conservation of

HC Verma - Concepts of Physics Part 1While watering a distant plant, a gardener partially closes the exit hole of the pipe by putting his finger on it. Explain why this results in the water stream going to a larger distance.

HC Verma - Concepts of Physics Part 1