Water is flowing through a tube of non-uniform cross-section. Ratio of the radius at entry and exit end of the pipe is $3$ : $2$. Then the ratio of velocities at entry and exit of liquid is
  • A$4:9$
  • B$9:4$
  • C$8:27$
  • D$1:1$
Medium
art

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Similar Questions

  • 1
    A vertical cylindrical container of base area $A$ and upper cross-section area $A_1$ making an angle $30^o $ with the horizontal is placed in an open rainy field as shown near another cylindrical container having same base area $A$. The ratio of rates of collection of water in the two containers will be
    View Solution
  • 2
    Consider a cylindrical tank of radius $1 m$ is filled with water. The top surface of water is at $15\,m$ from the bottom of the cylinder. There is a hole on the wall of cylinder at a height of $5\,m$ from the bottom. A force of $5 \times 10^{5} N$ is applied an the top surface of water using a piston. The speed of efflux from the hole will be.

    (given atmospheric pressure $P_{A}=1.01 \times 10^{5}\,Pa$, density of water $\rho_{ w }=1000\,kg / m ^{3}$ and gravitational acceleration $g=10\,m / s ^{2}$ )

    View Solution
  • 3
    A liquid flows in the tube from left to right as shown in figure. $A_1$ and $A_2$ are the cross-sections of the portions of the tube as shown. The ratio of speed $\frac{v_1}{v_2}$ will be .......... 
    View Solution
  • 4
    A log of wood of mass $120 Kg$  floats in water. The weight that can be put on the raft to make it just sink, should be ....... $Kg$ (density of wood = $600 Kg/m^3$)
    View Solution
  • 5
    A right circular cylinder has a mass $m$, radius $r$, and a height $h$. The cylinder is completely submerged in a fluid of density $\rho$, as shown in the diagram. What is the magnitude of the net force on the cylinder?
    View Solution
  • 6
    Figure shows a siphon. Choose the wrong statement:

    ($P_0$ = atmospheric pressure)

    View Solution
  • 7
    If $W$ be the weight of a body of density $\rho $ in vacuum then its apparent weight in air of density $\sigma $ is
    View Solution
  • 8
    When a body falls in air, the resistance of air depends to a great extent on the shape of the body, $ 3 $ different shapes are given. Identify the combination of air resistances which truly represents the physical situation. (The cross sectional areas are the same).
    View Solution
  • 9
    Viscous drag force depends on ...........
    View Solution
  • 10
    A tube is attached as shown in closed vessel containing water. The velocity of water coming out from a small hole is :
    View Solution