Mechanical Properties of Fluids

Assertion : A water drop sticks to the glass surface. Reason : Water have properties of surface tension.

A cylinder of height $1 \mathrm{~m}$ is filled with water. If a small orifice is made at a height of $0.25 \mathrm{~m}$ from the ground, the horizontal range of water stream will be

An object floats in water with $10 \%$ of its volume outside and in oil $30 \%$ of its volume outside. The specific gravity of the oil is

Assertion : Water drops take spherical shape when falling freely. Reason : Water has minimum surface tension among all liquids.

If $T$ is the surface tension of the liquid, the change in surface energy by splitting a liquid drop of radius $R$ into 125 droplets of radius $r$ is

Assertion : Viscous force is measurement of resistance of a liquid. Reason : Work done by viscous force converts kinetic energy into heat energy of liquid.

A ring of radius $R$ is kept on water surface. Surface tension of water is $T$ and mass is $m$. What force required to lift the ring from water surface?

Assertion : Surface tension decreases with increases in temperature. Reason : On increasing temperature kinetic energy increases and intermolecular forces decreases.

Assertion : A needle placed carefully on the surface of water may float, whereas a ball of the same material will always sink. Reason : The buoyancy of an object depends both on the material and shape of the object.

Assertion : A needle placed carefully on the surface of water may float, whereas the ball of the same material will always sink. Reason : The buoyancy of an object depends both on the materials and shape of the object.

Assertion : A piece of ice, with a stone frozen inside it, floats on water in a beaker. When the ice melts, the level of water in the beaker decreases. Reason : Density of stone is more than that of water.

A solid sphere of volume $V$ and density $\rho$ floats at the interface of two immiscible liquids of densities $\rho_1$ and $\rho_2$ respectively. If $\rho_1 < \rho < \rho_2$, then the ratio of volume of the parts of…