List of top Physics Questions on Fluid Mechanics asked in IPU CET

Two liquid drops of equal radii are falling through air with the terminal velocity \( v \). If these two drops coalesce to form a single drop, its terminal velocity will be
The Reynolds number for fluid flow in a pipe is independent of
A tank is filled with a liquid upto a height \( H \). A small hole is made at the bottom of this tank. Consider \( t_1 \) be the time taken to empty the first half of the tank and \( t_2 \) be the time taken to empty the rest half of the tank. Then, determine the ratio \( \frac{t_1}{t_2} \).
A stream of water flowing horizontally with the speed of 15 m/s gushes out of a tube of cross-sectional area \( 10^{-2} \, \text{m}^2 \) and hits a vertical wall nearby. What is the force exerted on the wall by the impact of water? Assuming it does not rebound.
A liquid is poured into a vessel at rest with the hole in a wall closed by a valve. It is filled to height \( H \). The distance of the hole from the top surface is \( h \). What is the horizontal acceleration required to move the vessel so that the liquid does not come out when the valve is opened (given \( l = \) length of the base)?
A body of density \( D \), and mass \( M \) is moving downward in glycerine of density \( D_z \). What is the viscous force acting on it?
Which of the following gives the percent change to the Young's modulus for a substance, when its cross-sectional area is increased by a factor of 3?
The density of ice is $9.2 \times 10^2 \, \text{kg/m}^3$. If a chunk displaces $10^{-2} \, \text{m}^3$, the buoyant force on the ice is most nearly:
An ideal fluid with pressure $p$ flows through a horizontal pipe with radius $r$. If the radius of the pipe is increased by a factor of 2, which of the following most likely gives the new pressure?
A drop of liquid of density $\rho$ is floating half-immersed in a liquid of density $d$. If $\sigma$ is the surface tension, then the diameter of the drop of the liquid is