State Pascal's law. - Vidyadip

Question

State Pascal's law.

✓

Answer

Pascal's law : A change in the pressure applied to an enclosed fluid at rest is transmitted undiminished to every point of the fluid and to the walls of the container, provided the effect of gravity can be ignored.
[Note: The law does not say that 'the pressure is the same at all points of a fluid' - rightly so, since the pressure in a fluid near Earth varies with height. Rather, the law applies to the change in pressure. According to Pascal's law, if the pressure on an enclosed static fluid is changed by a certain amount, the pressure at all points within the fluid changes by the same amount.
The above law is due to Blaise Pascal $(1623$ - 62), French mathematician and physicist.]

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

Explore more

More "Answer the following in Brief" from Mechanical Properties of Fluids→Mechanical Properties of Fluids — all question types→Physics STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

A parallel-plate air capacitor has circular plates, each of diameter $20 cm$, separated by a distance of $2 mm$. The potential difference between the plates is maintained at 360 volts. Calculate its capacitance and charge. What is the intensity of the electric field between the plates of the capacitor? $[k=1]$

In the above problem, what will be the magnetic field B inside the wire at a distance r from its axis, if the current density J is uniform across the cross section of the wire?

You must have noticed high tension power transmission lines, the power lines on the big tall steel towers. Strong magnetic fields are created by these lines. Care has to be taken to reduce the exposure levels to less than 0.5 milligauss (mG).

An ac generator spinning at a rate of $750 rev / min$ produces a maximum emf of $45 V$. At what angular speed does this generator produce a maximum emf of $102 V$ ?

State the expression for the Ml of a thin spherical shell (i.e., a thin-walled hollow sphere) about its diameter. Hence obtain the expression for its $\mathrm{Ml}$ about a tangent.

In a hydraulic lift, the input piston has surface area $20 \mathrm{~cm}^2$. The output piston has surface area $1000 \mathrm{~cm}^2$. If a force of $50 \mathrm{~N}$ is applied to the input piston, it raises the output piston by $2 \mathrm{~m}$. Calculate the weight of the support on the output piston and the work done by it.

What is a transformer?
State the principle of working of a transformer.

The work function for a metal surface is \(2.2 eV\). If light of wavelength 5000Å is incident on the surface of the metal, find the threshold frequency and incident frequency. Will there be an emission of photoelectrons or not? \(\left(c=3 \times 10^8 m / s , 1 eV =1.6 \times 10^{-19} J , h =6.63 \times 10^{-34} J . s\right.\). \()\)

Explain the construction and working of the Moving coil Galvanometer.

A particle performs SHM of amplitude $10 cm$. Its maximum velocity during oscillations is $100 cm / s$. What is its displacement, when the velocity is $60 cm / s$ ?