Pressure inside a soap bubble is greater than the pressure outside by an amount : (given : $$\mathrm{R}=$$ Radius of bubble, $$\mathrm{S}=$$ Surface tension of bubble)
A small ball of mass $$m$$ and density $$\rho$$ is dropped in a viscous liquid of density $$\rho_0$$. After sometime, the ball falls with constant velocity. The viscous force on the ball is :
Match List I with List II :
LIST I |
LIST II |
||
---|---|---|---|
A. | A force that restores an elastic body of unit area to its original state | I. | Bulk modulus |
B. | Two equal and opposite forces parallel to opposite faces | II. | Young's modulus |
C. | Forces perpendicular everywhere to the surface per unit area same everywhere | III. | Stress |
D. | Two equal and opposite forces perpendicular to opposite faces Choose the correct answer from the options given below : | IV. | Shear modulus |
Choose the correct answer from the options given below :
Given below are two statements :
Statement I : When a capillary tube is dipped into a liquid, the liquid neither rises nor falls in the capillary. The contact angle may be $$0^{\circ}$$.
Statement II : The contact angle between a solid and a liquid is a property of the material of the solid and liquid as well.
In the light of the above statement, choose the correct answer from the options given below.