Question

the size of an air bubble increase as it approaches the surface of water from bottom why?
proper answer needed​

Answer 1

Answer:

It can not move side ways as the pressure at same level in a liquid is same. while coming from bottom to top, the pressure decreases. In ac cordance with Boyal's law , i.e., PV = a constant, so volume of the air bubble increases, `i.e. the bubble will grow insize while coming from bottom to top of water.

Answer 2

Answer:

Well because the pressure at the top is less.

Explanation:

As we know that air has less density than water.Air density is 1.225 Kg/m^3 ,whereas water density is 997 Kg/m^3.So the bubble below the surface has less pressure as compared to the bubble on the surface.Nd when the air bubble rises ,the pressure decreases nd thus gains more volume nd ultimately it's size also increases.