In the fig above if the atmospheric pressure is 760mm, the pressure of the chamber G is
- 660mm
- 690mm
-
830mm
- 860mm
The correct answer is: C
Explanation
P\(_G\) = P\(_{atm}\) + height due to mercury column
P\(_G\) = 760 + (10 - 3) = 760 + 70 = 830mm
(1cm = 10mm)