Physics 0625 · IGCSE · Kinetic particle model of matter

Kinetic particle model of matter — practice question

A diver below the water is using breathing apparatus at a depth where the pressure is $1.25 \times 10^{5}\,\text{Pa}$. When the diver releases a bubble of gas, its volume is $20\,\text{cm}^3$. The bubble rises up to the water’s surface. At the surface, the atmospheric pressure is $1.00 \times 10^{5}\,\text{Pa}$. The water temperature is constant at all depths. Determine the volume of this bubble when it arrives at 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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