Question

When an air bubble rises from the bottom of a deep lake to a point just below the water surface, the pressure of air inside the bubble:

(A) is greater than the pressure outside it

(B) is less than the pressure outside it

(C) increases as the bubble moves up

(D) decreases as the bubble moves up

Answer 1

Correct Option (A,D)

Explanation:

Pressure inside the bubble at the bottom is

Pressure inside the bubble near the surface is

Pressure inside the bubble near the surface is

so pressure will decrease as we move upwards