An air bubble of volume 2 cm\(^3\) is formed 20m under water. What will be its volume when it rises to just below the surface of the water if the atmospheric pressure is equivalent to a height of 10m of water?
-
6cm3
- 4cm3
- 3cm3
- 2cm3
- 1cm3
The correct answer is: A
Explanation
P\(_1\)V\(_1\) = P\(_2\)V\(_2\)
When the bubble comes to the surface and pressure drops 3 times, the volume increases 3 times.
V\(_2\) = 3 x 2
= 6 cm\(^3\)