In given figure- if the pressure of gas in bulb A is 50 cm Hg vacuum and -atm-76 cm Hg- then height of column H is equal to

You visited us 5 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Other

Fluid Mechanics

Absolute , Gauge , Atmospheric and and Vacuum Pressure

In given figu...

Question

In given figure, if the pressure of gas in bulb A is 50 cm Hg vacuum and $ρ_{a t m}$ =76 cm Hg, then height of column H is equal to

26 cm

No worries! We‘ve got your back. Try BYJU‘S free classes today!

50 cm

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

76 cm

No worries! We‘ve got your back. Try BYJU‘S free classes today!

126 cm

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B 50 cm

$h_{v a c} = 50 c m H g$
$P_{a t m} = 76 c m H g$
Absolute pressure at point 1
= Absolute pressure of point 2
$(P_{a b s})_{1} = (P_{a b s})_{2}$
$(P_{a t m} + P_{G})_{1} = (P_{a t m} - P_{v a c})_{2} + ρ g H$
$P_{a t m} + 0 = P_{a t m} - P_{v a c} + ρ g H$
or $ρ g H = P_{v a c}$
$ρ g H = ρ g h_{v a c}$
or
$H = h_{v a c} = 50 c m H g$

Suggest Corrections

Similar questions

In the experiment given below, if the atmospheric pressure is 76 cm of Hg $(h_{0})$ and the height is 3 cm, find the pressure of the gas in the tube.

A student performs an experiment using a barometer as shown in the figure below. The atmospheric pressure is given as 76 cm of Hg $(h_{0})$ and the rise in height is 5 cm. What will be the pressure of the gas?

Two glass bulbs of equal volumes connected by a narrow tube are filled with a gas at $0^{\circ} C$ and a pressure of 76 cms of Hg. One of the bulbs is then placed in a water bath maintained at $62^{\circ} C$ . What is the new value of the pressure inside the bulb? The volume of connecting tube is negligible

Q. Two glass bulbs of equal volume are connected by a narrow tube and filled with a gas at

0^{\circ}

C and pressure of 76 cm of mercury. One of the bulb is then placed in a water bath maintained at

62^{\circ}

C . What is the new value of the pressure inside the bulbs. The volume of the connecting tube is negligible.

Q. A gas at certain volume and temperature has a pressure equal to

75 cm

of Hg. column. If the mass of the gas is doubled, at the same volume and temperature, its new pressure will become (in

cm

of Hg)-

Join BYJU'S Learning Program

In given figure, if the pressure of gas in bulb A is 50 cm Hg vacuum and ρatm=76 cm Hg, then height of column H is equal to

The correct option is B 50 cm hvac=50cm Hg Patm=76cm Hg Absolute pressure at point 1 = Absolute pressure of point 2 (Pabs)1=(Pabs)2 (Patm+PG)1=(Patm−Pvac)2+ρgH Patm+0=Patm−Pvac+ρgH or ρgH=Pvac ρgH=ρghvac or H= hvac =50cm Hg

In given figure, if the pressure of gas in bulb A is 50 cm Hg vacuum and $ρ_{a t m}$ =76 cm Hg, then height of column H is equal to