Physics 5054 · O Level · Pressure

Pressure — practice question

A mercury manometer is employed to determine the pressure of a gas. The atmospheric pressure is $p_0$ and the density of mercury is $\rho$. What is the gas pressure?

  • A$p_0 - h\rho g$
  • B$p_0 + h\rho g$
  • C$p_0$
  • D$h\rho g$

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