Question

How do air bubble in water behave??



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Answer 1

The air bubble inside water behaves like a Concave lens. This is because The normal at any point of a spherical bubble will pass through the center of the bubble. It is clearly visible that the air bubble acts as a diverging lens.

Answer 2

Answer:

The air bubble is a 'sphere' with a convex surface, and as light strikes it, inside the water, the light gets reflected as in a concave lens. The 'refractive index' of air is 1 and of water 1.33. As the 'refractive index of water' is greater than air, the air bubble in water should behave as a concave lens

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