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Q. What is the absolute pressure of the gas above the liquid surface in the tank shown in fig. Density of oil $=820\, kg / m ^3$, density of mercury $=13.6 \times 10^3\, kg / m ^3$. Given $1$ atmospheric pressure $=1.01 \times 10^5\, N / m ^2$Physics Question Image

Mechanical Properties of Fluids

Solution:

Correct answer is (a) $3.81 \times 10^5 N / m ^2$