Two liquids having densities $d_1$ and $d_2$ are mixed in such a way that both have same mass. The density of the mixture is ............
$\frac{d_1+d_2}{2}$
$\frac{d_1+d_2}{d_1 d_2}$
$\frac{d_1 d_2}{d_1+d_2}$
$\frac{2 d_1 d_2}{d_1+d_2}$
Water is pumped through the hose shown below, from a lower level to an upper level. Compared to the water at point $1$ , the water at point $2$
There are two identical small holes of area of cross-section a on the opposite sides of a tank containing a liquid of density $\rho $. The difference in height between the holes is $h$. Tank is resting on a smooth horizontal surface. Horizontal force which will have to be applied on the tank to keep it in equilibrium is
A spherical drop of water has $1\, mm$ radius. If the surface tension of water is $70\times10^{-3}\, N/m$ . Then the difference of pressures between inside and outside of the spherical drop is :
The diagram (figure) shows a venturimeter, through which water is flowing. The speed of water at $X$ is $2\,cm/s$. The speed of water at $Y$ (taking $g = 1000\,cm/s^2$ ) is ........ $cm/s$
Application of Bernoulli's theorem can be seen in