Physics 9702 · AS & A Level · Density and pressure

Density and pressure — practice question

The diagram depicts two vessels, P and Q, each with sides inclined at $45^\circ$ to the horizontal. Vessel P widens towards the top, while vessel Q narrows towards the top, as shown. Both vessels hold a liquid. The liquid depth is the same in each vessel. The liquid in vessel P is twice as dense as the liquid in vessel Q. What is the ratio pressure from the liquid on the base of P : pressure from the liquid on the base of Q?

  • A$\frac{2}{1}$
  • B$\frac{\sqrt{2}}{1}$
  • C$\frac{1}{\sqrt{2}}$
  • D$\frac{1}{2}$

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