Question
Question: An open ended Hg manometer is used to measure the pressure exerted by a trapped gas as shown in the ...
An open ended Hg manometer is used to measure the pressure exerted by a trapped gas as shown in the figure. Atmospheric pressure is 749 m.m. of Hg. What is the pressure of the trapped gas-
A
292 m.m. Hg
B
457 m.m. Hg
C
749 m.m. Hg
D
1041 m.m. Hg
Answer
1041 m.m. Hg
Explanation
Solution
Press. of the gas = 749 + 292 = 1041 mm Hg.