Question
State Bernoulli's principle.

Answer


Where the velocity of an ideal fluid in streamline flow is high, the pressure is low, and where the velocity of a fluid is low, the pressure is high. OR At every point in the streamline flow of an ideal (i.e., nonviscous and incompressible) fluid, the sum of the pressure energy, kinetic energy and potential energy of a given mass of the fluid is constant at every point.
[Note: The above principle is equivalent to a statement of the law of conservation of mechanical energy as applied to fluid mechanics. It was published in 1738 by Daniel Bernoulli (1700 - 82), Swiss mathematician.]

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The initial pressure and volume of a gas enclosed in a cylinder are respectively $1 \times 10^5 N / m ^2$ and $5 \times 10^{-3} m ^3$. If the work done in compressing the gas at constant pressure is $100 J$. Find the final volume of the gas.
A particle in linear SHM is in its 5th oscillation. If its displacement at that instant is $-\frac{1}{2} A$ and is moving toward the mean position, determine its phase at that instant.
Find the kinetic energy per unit volume of nitrogen at a pressure of $76 \mathrm{~cm}$ of mercury. Hence, find the kinetic energy of $10 \mathrm{~cm}^3$ of the gas under the same condition. Take $\rho$ (mercury) = $13.6 \mathrm{~g} / \mathrm{cm}^3$ and $\mathrm{g}=9.8 \mathrm{~m} / \mathrm{s}^2$.
What is the temperature at which a blackbody radiates heat at the rate of 1 kilowatt per square metre?
Why should a Carnot cycle have two isothermal two adiabatic processes?
Calculate the force required to move a flat glass plate of area of $10 \mathrm{~cm}^2$ with a uniform velocity of $1 \mathrm{~cm} / \mathrm{s}$ over the surface of a liquid $2 \mathrm{~mm}$ thick, if the coefficient of viscosity of the liquid is 2 Pa.s.
In Fraunhoffer diffraction by a narrow slit, a screen is placed at a distance of $2\ m$ from the lens to obtain the diffraction pattern. If the slit width is $0.2\ mm$ and the first minimum is $5\ mm$ on either side of the central maximum, find the wavelength of light.
What is an incompressible fluid?
If the critical angle of a medium is \(\sin ^{-1}\left(\frac{3}{5}\right)\) find the polarising angle.
The refractive indices of glass and water with respect to air are $\frac{3}{2}$ and $\frac{4}{3}$, respectively. Determine the refractive index of glass with respect to water.