Physics 0625 · IGCSE · Kinetic particle model of matter

Kinetic particle model of matter — practice question

A diver underwater is using breathing apparatus at a depth where the pressure is $1.25 \times 10^5\,\text{Pa}$. A gas bubble exhaled by the diver has a volume of $20\,\text{cm}^3$ at the moment it is released. The bubble then rises to the water surface. At the water surface, the atmospheric pressure is $1.00 \times 10^5\,\text{Pa}$. The water temperature is constant at every depth. What volume does the bubble have when it reaches the surface?

  • A$15\,\text{cm}^3$
  • B$16\,\text{cm}^3$
  • C$20\,\text{cm}^3$
  • D$25\,\text{cm}^3$

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