Question

10. One arm of a glass U-tube is open to the atmosphere, whereas the other vertical arm
is connected to a gas supply. The difference in levels of mercury (density = 13.6 g cm)
between the vertical arms of the U-tube manometer is h - 5 cm. If the atmospheric
pressure is 760 mm Hg and the gravitational acceleration is 9.8 m sº, then the
pressure of the gas is about?
A) 1.102 x 104 dynes cm-2
B) 1.080 x 10 dynes cm -2
C) 6,664 x 104 dynes cm-2
D) 1.020 x 10' dynes cm-2​

Answer 1

Answer:

A U-tube manometer has two arms and filled with a manometer liquid. One arm is connected to the vessel in which, fluid (whose pressure is to be measured) is filled and other arm is open so that liquid can rise or fall.