Mechanical Prop...

The velocity of the water flowing from the inlet pipe is less than the velocity of water flowing out from the spin pipe B.

Two spheres of the same material, but of radii $$R$$ and $$3R$$ are allowed to fall vertically downwards through a liquid of density $$\rho$$. The ratio of their terminal velocities is:

A tank is filled with water to a height $$H$$. Two holes are made on its side wall, one at a height of $$h$$ from the bottom and other at a depth $$h$$ from the top. The horizontal jets starting from the two holes meet the ground or side (in level with the bottom of the tank) at the same point. This distance of this point from the side of the tank is

In a streamline flow of a liquid

A square hole of side length $$l$$ is made at a depth of $$y$$ and a circular hole is made at a depth of $$4y$$ from the surface of water in a water tank kept on a horizontal surface. If equal amount of water comes out of the vessel through the holes per second then the radius of the circular hole is equal to $$(r, l << y)$$ :

Three capillaries of lengths $$L$$, $$\dfrac{L}{2}$$ and $$\dfrac{L}{3}$$ are connected in series. Their radii are $$r$$, $$\dfrac{r}{2}$$ and $$\dfrac{r}{3}$$ respectively. Then if stream line flow is to be maintained and the pressure across the first capillary is $$P$$, then

A water tank placed on the floor has two small holes, pinched in the vertical wall, one above the other. The holes are $$3.3 cm$$ and $$4.7 cm$$ above the floor. If the jets of water issuing out from the holes hit the floor at the same point on the floor, then the height of water in the tank is

 Water and mercury are filled in two cylindrical vessels upto same height. Both vessels have a hole in the wall near the bottom. The velocity of water and mercury coming out of the holes are $$v_1$$ and $$v_2$$ respectively. Thus

A tube of length L and radius $$R$$ is joined to another tube of length $$\dfrac{L}{3}$$ and radius $$\dfrac{R}{2}$$ . A fluid is flowing through this tube. If the pressure difference across the first tube is $$P$$, then the pressure difference across the second tube is

For a liquid, which is rising in a capillary tube, the angle of contact is