Mechanical Properties of Fluids
Which of the following devices operates on the principle of Pascal's law?
What is the SI unit of coefficient of viscosity?
According to Stokes' law, the terminal velocity ($v_t$) of a small spherical body falling in a viscous medium is directly proportional to:
Bernoulli's theorem is a statement of the conservation of:
The SI unit of surface tension is:
The angle of contact between pure water and clean glass is approximately equal to:
The angle of contact for mercury with clean glass is:
The excess pressure inside a liquid drop of radius $R$ and surface tension $T$ is:
The excess pressure inside a soap bubble of radius $R$ and surface tension $T$ is:
With an increase in temperature, the viscosity of liquids:
A Venturimeter is an instrument used to measure the:
For a fluid flowing through a narrow tube, the flow is steady or streamline if Reynolds number ($R_e$) is:
According to Jurin's law, the height $h$ to which a liquid rises in a capillary tube of radius $r$ is inversely proportional to:
The equation of continuity $A_1 v_1 = A_2 v_2$ expresses the principle of conservation of:
The phenomenon of dynamic lift on a spinning ball moving in air is called:
According to Torricelli's law, the speed of efflux ($v$) of a liquid from an open tank through a small hole at depth $h$ below the free surface is given by:
The total work done in blowing a soap bubble of radius $R$ in air (surface tension $T$) is:
The dimensional formula of surface tension is:
When two small spherical rain drops of equal radius $r$ coalesce to form a bigger drop, the surface energy of the system:
The SI unit of coefficient of viscosity ($\neta$) is:
How does the terminal velocity ($v_t$) of a small spherical body falling through a viscous fluid depend on its radius ($r$)?
Bernoulli's theorem is based on the law of conservation of:
For a liquid that does not wet a solid surface, the angle of contact is:
A Venturimeter is a device used to measure:
According to Stokes' Law, the viscous force ($F$) acting on a sphere of radius $r$ moving with velocity $v$ in a fluid of viscosity $\neta$ is given by:
The velocity of efflux ($v$) of a liquid through an orifice at depth $h$ below the free surface is given by Torricelli's law as:
A flow of liquid is steady or streamline if the Reynolds number ($N_R$) is:
Two rain drops reach the earth with terminal velocities in the ratio $1 : 4$. What is the ratio of their radii?
Dynamic lift on an aeroplane wing is explained on the basis of:
If a capillary tube is placed in an artificial satellite orbiting the Earth (weightlessness condition), liquid will rise in the capillary tube up to:
When soluble impurities like salt are added to water, its surface tension: