List of top Physics Questions on Pressure

The volume contraction of a solid copper cube of edge length 10 cm, when subjected to a hydraulic pressure of \( 7 \times 10^6 \) Pa, would be ________________________ mm\(^3\). (Given bulk modulus of copper = \( 1.4 \times 10^{11} \) N m\(^{-2}\))
The volume contraction of a solid copper cube of edge length 10 cm, when subjected to a hydraulic pressure of \( 7 \times 10^6 \) Pa, would be _____ mm\(^3\). (Given bulk modulus of copper = \( 1.4 \times 10^{11} \) N m\(^{-2}\))
1 torr = ________
A 31.4 kg girl wearing high heel shoes balances on a single heel. The heel is circular with a diameter of 2 cm. The pressure exerted by the heel on the horizontal floor is (Acceleration due to gravity = 10 m/s\(^2\)):
If the length of a cylinder made with a material of Poisson’s ratio 0.4 is increased by 5\%, then the decrease in its diameter is:
Three identical vessels are filled up to the same height with three different liquids A, B, and C of densities \( \rho_A \), \( \rho_B \), and \( \rho_C \) respectively. If \( \rho_A >\rho_B >\rho_C \), then the pressure at the bottom of the vessels is?
A spherical soap bubble inside an air chamber at pressure \(𝑃_0 = 10^5 \)Pa has a certain radius so that the excess pressure inside the bubble is Δ𝑃 = 144 Pa. Now, the chamber pressure is reduced to \(8𝑃_0/27\) so that the bubble radius and its excess pressure change. In this process, all the temperatures remain unchanged. Assume air to be an ideal gas and the excess pressure Δ𝑃 in both the cases to be much smaller than the chamber pressure. The new excess pressure Δ𝑃 in Pa is
Pressure inside a soap bubble is greater than the pressure outside by an amount;(given : R = Radius of bubble, S = Surface tension of bubble)
Mercury is filled in a tube of radius \(2 \, \text{cm}\) up to a height of \(30 \, \text{cm}\). The force exerted by mercury on the bottom of the tube is ___N.
(Given, atmospheric pressure = \(10^5 \, \text{N/m}^2\), density of mercury = \(1.36 \times 10^4 \, \text{kg/m}^3\), \(g = 10 \, \text{m/s}^2\), \(\pi = \frac{22}{7}\))

Two vessels A and B are of the same size and are at the same temperature. A contains 1 g of hydrogen and B contains 1 g of oxygen. \(P_A\) and \(P_B\) are the pressures of the gases in A and B respectively, then \(\frac{P_A}{P_B}\) is:

\(T-V\) graph is given for two different pressures \(P_1\) and \(P_2\), Then :
T-V graph is given for two different pressures
In a container, 1 g of hydrogen and 1 g of oxygen are taken. Find the ratio of hydrogen pressure to oxygen pressure.

A hypothetical gas expands adiabatically such that its volume changes from 08 litres to 27 litres. If the ratio of final pressure of the gas to initial pressure of the gas is $\frac{16}{B 1}$. Then the ratio of $\frac{C p}{C v}$ will be

Match List I with List II
LIST ILIST II
ASurface tension1kgm−1s−1
BPressure2kgms−1
CViscosity3kgm−1s−2
DImpulse4kgs−2
Choose the correct answer from the options given below:
The pressure required to decrease the volume of 4000 cc of water by 0.05%: (Bulk modulus of water = \( 2.2 \times 10^9 \, \text{Nm}^{-2} \))
A hydraulic automobile lift is designed to lift vehicles of mass 5000 kg. The area of cross section of the cylinder carrying the load is 250 cm². The maximum pressure the smaller piston would have to bear is [Assume g = 10 m/s²]:
Given below are two statements:  
Statement I : Pressure in a reservoir of water is same at all points at the same level of water.  
Statement II : The pressure applied to enclosed water is transmitted in all directions equally. 
In the light of the above statements, choose the correct answer from the options given below : 
There is an air bubble of radius 1 mm in a liquid of surface tension 0.075 N/m and density 1000 kg/m3. The bubble is at a depth of 10 cm below the free surface. By what amount is the pressure inside the bubble greater than the atmospheric pressure is ___pa(g-10 ms-2).
Glycerine of density 1.25 × 103 kg m-3 is flowing through the conical section of pipe. The area of cross-section of the pipe at its ends is 10 cm2 and 5 cm2 and pressure drop across its length is 3 Nm-2. The rate of flow of glycerine through the pipe is x x10-5 m3 s-1. The value of x is____.
A bicycle tire is filled with air at a pressure of \( 270 \) kPa at \( 27^\circ C \). What is the approximate pressure of the air in the tire when the temperature increases to \( 36^\circ C \)?
A large air mass swirling around a low pressure area is known as -
In an open tank, water in present to a depth of 3 m and above it oil in present to a depth of 2 m. The intensity of pressure at the interface of the two fluid layers will be:
(Given specific gravity of oil = 0.7)
Coefficient of volume change (mv) is given by -
Where av is coefficient of compressibility and Co is initial void ratio corresponding to the initial pressure.
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: The air that rushes horizontally into a low pressure area changes into a whirling mass, because of the rotatory motion of the earth about its own axis.
Reason R: The central portion of this air mass with low pressure acts like a cluminey where air gets lifted, expands, cools and finally gets condensed.
In the light of the above statements, choose the correct answer from the options given below :
When the water surface coincides the top edge of a rectangular vertical 40m (wide) x 3m (deep), then the depth of center of pressure is.