A cubical vessel sealed vessel with edge $L$ is placed on a cart, which is moving horizontally with an acceleration `a' as shown iin figure. The cube is filled with an ideal fluid having density $\rho$. Find the gauge pressure at the centre of the cubical vessel.

State whether given statement is True or False
You find your mass to be $42$kg on a weighing machine. Is your mass more or less than $42$kg?

State whether true or false:

The boiling point of a liquid can be raised by

Cooking is done fast in pressure cooker because

When the piston of a pump is pulled up, the pressure inside_____

The air pressure inside out body is equal to the ____?

Ink does not spill out of an ink dropper when the atmospheric pressure and ____ pressure are equal.

State whether the following statements are true or false?
(i) the pressure inside our body is equal to the atmospheric pressure
(ii) pressure is inversely proportional to the area.

Height of atmosphere is about ________ $km$.

While filling a syringe with liquid which of the following is true for pressure inside the barrel and the atmospheric pressure acting on the liquid?

Which of the following are the common consequences of atmospheric pressure in our daily life.

Atmospheric pressure exerted on earth is due to the.

A boiler is made of a copper plate 2.4mm thick with an inside coating of a 0.2mm thick layer of tin.The surface area exposed to gases at ${\rm{70}}{{\rm{0}}^{\rm{0}}}{\rm{C is 400c}}{{\rm{m}}^{\rm{2}}}$ . The amount of steam that could be generated per hour at atmospheric pressure is  ${\rm{(}}{{\rm{K}} _{{\rm{cu}}}}{\rm{ = 0}}{\rm{.9 and }}{{\rm{K}} _{{\rm{tin}}}}{\rm{ = 0}}{\rm{.15cal/cm/s}}{{\rm{/}}^{\rm{0}}}{\rm{C and }}{{\rm{L}} _{{\rm{steam}}}}{\rm{ = 540cal/g)}}$

Icc of water at $ 100^o C $ is given 540 cal of heat and the steam formed accupies 167 Icc at the atmospheric pressure. Then workdone against atmospheric pressure in this process is nearly.

A partially inflated balloon expands fully when 

When the pressure of water is increased, the boiling temperature of water as compared to $100^oC$ will be :

The foundations of high-rise buildings are kept wide so that they may exert more pressure on the ground.

Which of the following statement is NOT true.

You are riding on your bicycle with inflated tyres. Your friend asks for a lift and sits on the carrier behind you

A glass bulb is balanced by a brass weight in a sensitive beam balance. Now the balance is covered by a glass-jar which is then evacuated. Then:

If the value of atmospheric pressure is $10^6$ dyne $cm^{-2}$, its value in SI units is

A pressure equivalent of 1 mm is called a

$1  atm=Z$  pascal. Then find the value of $Z$?

One atmospheric pressure (atm)  is equal to

State the S.I. unit. of pressure

1 atm is

1 torr is equal to 

Which of the following is/are the example(s) of absolute pressure 

The correct relationship between gauge pressure, atmospheric pressure and absolute pressure is 

If one newton force is applied to unit crossesctional area (in $m^2$)  of any subject then the amount of pressure applied is

The amount by which the pressure measured in a fluid exceeds that of the atmosphere is known as 

One atmospheric pressure at sea level is equal to 760 cm of Hg.

A bubble is at the bottom of a lake of depth $h$. As the bubble comes to the sea level, its radius increase three times. If atmospheric pressure is equal to $l$ metre of a water column, then $h$ is equal to

If a given mass of gas occupies a volume of 10 cc at 1 atmospheric pressure and a temperature of ${ 100 }^{ 0 }$C (373.15 k). What will be its volume at 4 atmospheric pressure; the temperature being the same 

A narrow glass tube, $80$ cm long and opens at both ends, is half immersed in mercury, now the top of the tube is closed and is taken out of mercury A column of mercury $20$ cm long remains in the tube. Find the atmospheric pressure

Find pressure on swimmer at a depth of $10 m$ in water

A brass scale, correct at $0^\circ C$, registers the height of a mercury barometer at 76.5 cm at $30^\circ c$. What is the actual height of the barometer? [Linear expansivity for brass=$1.9\times10^{-5} K^{-1}$]

A barometer is carried from the $1^{st}$ floor to the $20^{th}$ floor of a building. Why does the reading on the barometer fall?

Atmospheric pressure can be measured by which of the following instruments

The pressure energy per unit volume of a liquid is

'The atmospheric pressure at a place is $76  cm$ of $Hg$? State its value in $bar$.

$1\ atm$ of pressure is equal to

$1\ Pa$ of pressure is equal to:

A measurement referenced to the atmospheric pressure and it varies from the measurement of barometric reading and manometer reading is called as 

A pressure equivalent to 1 mm of mercury is called 

1 pascal (Pa) is equal to 

$1\ Torr$ of pressure is equal to:

Increase in height of mercury column indicates:

Fill in the blanks:
1 psi is equivalent to $-$ atmospheric pressure.

$1\ Bar$ of pressure is equal to:

In free space, Fortin's barometer will read:

The pressure of a gas filled in the bulb of constant volume gas thermometer at $0^0C$ and $100^0C$ are 28.6 cm and 36.6 cm of mercury respectively. The temperature of bulb at which pressure will be 35.00 cm of mercury will be:

The pressure of a gas filled in the bulb of a constant volume gas thermometer at $0^o$C and $100^o$C are $28.6cm$ and $36.6cm$ of mercury respectively. The temperature of bulb at which pressure will be $35.0cm$ of mercury will be 

The height of mercury in a barometer is $760\ mm$, then the atmosphere pressure is $[g=9.8\ {m/s}^{2}]$:

Two communicating cylindrical vessel contain mercury. The diameter of one vessel is n times larger than the diameter of the other.A column of water of height h is poured into the vessel.The mercury level will rise in the right - hand vessel (s=relative density of mercury and p = density of water ) by 

A thin tube sealed at both ends, is $100\ cm$ long. It lies horizontally, the middle $0.1\ m$ containing mercury and the two ends containing air at standard atmospheric pressure. If the tube is turned to a vertical position, by what amount will the mercury be displaced ?

A barometer tube reads $76$ $cm$ of mercury. If the tube is gradually inclined at an angle of $60 ^ { \circ }$ with vertical, keeping the open end immersed in the mercury reservoir, the length of the mercury column will be  

2.56g of sulphur (colloidal sol) in 100 ml solution shows Osmotic pressure of 2.463 atm at ${ 27 }^{ 0 }C$. How many sulphur atoms are associated in colloidal sol ? [Solution constant = 0.0821 atm.${ mol }^{ -1 }{ k }^{ -1 }$]

The temperature of an air bubble while rising from bottom to surface of a lake remains constant but its diameter is doubled if the pressure on the surface is equal to h meter of mercury column and relative density of mercury is p then the depth of lake in metre is

The pressure of water at bottom in a lake is 3/2 times that at half depth where the water barometer reads $10$ m. The depth of the lake is:

Two communicating vessels contain mercury. The diameter of one vessel is four times larger than the diameter of the other. A column of water of height $h _0=70$ cm is poured into the left hand vessel (the narrower one). How much will be mercury level rise in the right hand vessel? ( Specific density of mercury= $13.6$)

The height of mercury $(h)$ in the manometer is

8 gm $O _{2}$,14 gm $N _{2}$ and 22 gm $CO _{2}$ is mixed in a container of 10 litre capacity at $27^oC$.The pressure exerted by the mixture in terms of atmospheric pressure will be-

Suppose the density of air at Hyderabad is $\rho _ { 0 }$ and atmospheric pressure is $P _ { \mathrm { atm } }$.Suppose we wish to calculate the pressure $P$ at a height $10 \mathrm { km }$ above Hyderabad. If we use the equation $P _ { 0 } - P = \rho g z$ to calculate $P$ with $z = 10 km$. But if we take only variation of $\rho$ with height we get $P _1$. if we take only of $g$ with height we get $P _2$, if we take both $\rho$ and $g$ variations with height we get $P _3$. Then 

An air bubble doubles its radius on rising from the bottom of water reservoir to the surface of water in it. If the atmospheric pressure is equal to $10 m $ of water, the height of water in the reservation s- 

A cubical block of steel each side '$\ell $' is floating in mercury in a vessel. The densities of steel and mercury are ${ p } _{ s }\quad and\quad { p } _{ m }$ .The height of block above the mercury level is given by.

A flask of volume $10^3cc$ is completely filled with mercury at $0^oC.$ The co-efficient of cubical expansion of mercury is $180\times10^{-6} /^oC$ at that of glass is $40\times10^{-6}/^oC.$ If flask is placed in boiling water at $100^oC,$ how much mercury will overflow   

Positive and negative ions are produced in the atmosphere due to cosmic rays from space and also due to radioactive element in the soil . in some region in the atmosphere the electric field strength is 100 V/m in the vertically downwaeds direction. This field exerts force on the positive and negative ions in the given region in atmosphere . as a result, positive ions , having a density $ 500/cm^3 $ drift downward while negative ions , havig a density $ 300/cm^3 $ drift upward al these ions are singly charged. it is observed that the conductivity in the given region is $ 4 \times 10^{-13} $ $ (\Omega -m)^{-1} $ . find the average speed of ions, assuming it to be the same for positive and negative ions.

An air tight container having a lid with negligible mass and a area of $8 c m^{2}$ is partially evacuated . If a 40N force is require to pull a lid off the container and the atmospheric pressure is $ 1.0 \times 10^{5} \mathrm{Ps}$ ,the presure in the container before it is opened must be

What should be the minimum volume of the room, if no liquid water is be  present finally in the room ? 

A gas is collected over the water at $25 ^ { \circ } \mathrm { C }$ . The total pressureof moist gas was 735$\mathrm { mm }$ of mercury. If the aqueous vapourpressure at $25 ^ { \circ } \mathrm { C }$ is 23.8$\mathrm { mm }$ . Then the pressure of dry gas is

20$\mathrm { cm }$ containing mercury and two equal ends containing air at standardatmospheric prossure. If the tube is now turned to a vertical position, by what amount will the mercury bo displaced?
(Given : cross-section of the tube can be assumed to be uniform):

The height of mercury column in a simple barometer is h. As the tube is inclined to the vertical at an angle $  \alpha,  $ the length of mercury column along the length of the tube is l; then:

A small bulb is filled with air at ${ 41 }^{ 0 }c$ and sealed. When it heated slowly in an oil bath upto ${ 198 }^{ 0 }c$, it is found to be broken. find the pressure at which the bulb is broken.

If the intensity of the incident radio wave of  $1\mathrm { w } / \mathrm { w } ^ { 2 }$  is reflected by the surface, find the pressure exerted on the surface?

Which limb of the tube should be connected to the pump?

A balloon contains  1500 $m^{3}$  of helium at $27^{\circ}C$   and 4 atmoshperic  pressure.  The volume of helium at $3^{\circ}C$  temperature and 2  atmospheric pressure will be 

To increase pressure, either force has to be increased or area of contact has to be decreased.

By sucking through a straw, a student can reduce the pressure in his lungs to $750 mm$ of Hg (density = $\displaystyle 13.6{ gm }/{ { cm }^{ 3 } }$). Using the straw, he can drink water from a glass upto a maximum depth of: 

$1$ millibar is equal to a pressure of

One gram mole of oxygen is enclosed in a vessel at a temperature of $27$ and at one atmospheric pressure. The vessel is thermally insulated and is moved with a constant speed $u _0$. Calculate $u _0$ if the rise in temperature is $1K$ when the vessel is suddenly stopped?

What will be the pressure in pascal due to a mercury column of $76$cm. Density of mercury is $13.6$ g$cm^2$, $g=980$ cm$s^2$?

The height of the mercury column in a simple barometer is $h$. As the tube is inclined with the vertical at an angle $\alpha$, the length of the mercury column along the length of the tube will become:

Barometer was constructed by

The liquid used in simple barometer is