A manometer connected to a closed tap reads $4.5 \times {10^5}$ pascal. When the tap is opened the reading of the manometer falls to $4 \times {10^5}$ pascal. Then the velocity of flow of water is ........ $m{s^{ - 1}}$
Medium
Download our app for free and get started
(d)$\frac{{{P_1} - {P_2}}}{{\rho g}} = \frac{{{v^2}}}{{2g}}$ ==> $\frac{{4.5 \times {{10}^5} - 4 \times {{10}^5}}}{{{{10}^3} \times g}} = \frac{{{v^2}}}{{2g}}$
$v=10m/s$
Download our appand 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
- 1Glycerine of density $1.25 \times 10^3\,kg\,m ^{-3}$ is flowing through the conical section of pipe. The area of cross-section of the pipe at its ends is $10\,cm ^2$ and $5\,cm ^2$ and pressure drop across its length is $3\,Nm ^{-2}$. The rate of flow of glycerine through the pipe is $x \times 10^{-5} m ^3 s ^{-1}$. The value of $x$ is $..............$.View Solution
- 2View SolutionA wooden piece floats half submerged in a tub of water. If the system is transferred to a lift ascending with acceleration the wooden piece will
- 3A water barrel stands on a table of height $h$. If a small hole is punched in the side of the barrel at its base, it is found that the resultant stream of water strikes the ground at a horizonatal distance $R$ from the barrel. The depth of water in the barrel isView Solution
- 4Water is filled in a tank upto $3 \,m$ height. The base of the tank is at height $1 \,m$ above the ground. What should be the height of a hole made in it, so that water can be sprayed upto maximum horizontal distance on ground?View Solution
- 5A tank $5\, m$ high is half-filled with water and then is filled to the top with oil of density $0.85\, g/cm^3$. The pressure at the bottom of the tank, due to these liquids is ....... $g\, dyne/cm^2$View Solution
- 6Three capillaries of length $L, \frac{L}{2}$ and $\frac{L}{3}$ are connected in series. Their radii are $r, \frac{r}{2}$ and $\frac{r}{3}$ respectively. Then if stream-line flow is to be maintained and the pressure across the first capillary is $P$, then ............View Solution
- 7$Assertion :$ The velocity of flow of a liquid is smaller when pressure is larger and vice-versa.View Solution
$Reason :$ According to Bernoulli’s theorem, for the stream line flow of an ideal liquid, the total energy per unit mass remains constant. - 8A container of height $10\, cm$ is filled with water. There is a hole at bottom. Find the pressure difference between points at top and bottom.View Solution
- 9View SolutionIn a laminar flow the velocity of the liquid in contact with the walls of the tube is
- 10Apiece of steel has a weight $W$ in air, $W_1$ when completely immersed in water and $W_2$ when completely immersed in an unknown liquid. The relative density (specific gravity)of liquid isView Solution