MEDIUM
JEE Advanced
IMPORTANT
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If a liquid rises to the same height in two capillaries of the same material at the same temperature, then
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Important Questions on Surface Tension and Viscosity
EASY
JEE Advanced
IMPORTANT
Viscous force is somewhat like friction as it opposes, the motion and is non-conservative but not exactly so, because
MEDIUM
JEE Advanced
IMPORTANT
When a capillary tube is dipped in a liquid, the liquid rises to a height in the tube. The free liquid surface inside the tube is hemispherical in shape. The tube is now pushed down so that the height of the tube outside the liquid is less than
MEDIUM
JEE Advanced
IMPORTANT
A vertical glass capillary tube, open at both ends, contains some water. Which of the following shapes may not be taken by the water in the tube ?
EASY
JEE Advanced
IMPORTANT
If drops of a liquid, each with surface energy , join to form a single drop, then
EASY
JEE Advanced
IMPORTANT
Eight identical droplets, each falling under gravity in the earth's atmosphere with terminal velocity , combine to form a single drop. The terminal velocity of single drop and drag force on it are calculated. Find the correct statement from the following.
MEDIUM
JEE Advanced
IMPORTANT
A sphere is dropped into a viscous liquid of viscosity $\eta$ from some height. If the density of material and liquid are $\rho$ and $\sigma$ respectively $(\rho>\sigma)$ then which of the following is/are incorrect.
MEDIUM
JEE Advanced
IMPORTANT
Two separate bubbles (radii and ) formed of the same soap solution (surface tension ) comes together to form a double bubble. The internal film common to both the bubbles has radius . Then,
MEDIUM
JEE Advanced
IMPORTANT
The velocity of liquid $(v)$ in steady flow at a location through cylindrical pipe is given by $v=v_{0}\left(1-\frac{r^{2}}{R^{2}}\right)$, where $r$ is the radial distance of that location from the axis of the pipe and $R$ is the inner radius of pipe, if $R=10 \mathrm{~cm}$, volume rate of flow through the pipe is $\pi / 2 \times 10^{-2} \mathrm{~m}^{3} \mathrm{~s}^{-1}$ and the coefficient of viscosity of the liquid is $0.75 \mathrm{~N} \mathrm{~s} \mathrm{~m}^{-2}$
