Final answer:
When a light ray passes through the upper half of a bubble of air suspended underwater, it undergoes refraction at each interface, resulting in a change in the direction of the light ray. The path followed by the light ray can be represented by a ray diagram, showing the bending of the light ray at the water-bubble and bubble-air interfaces.
Step-by-step explanation:
When a light ray passes from water into the upper half of a bubble of air suspended underwater, it undergoes refraction at each interface. As the light ray enters the bubble, it bends away from the normal at the water-bubble interface, and then bends toward the normal at the bubble-air interface. The approximate path followed by the light ray can be represented by a ray diagram as shown:
The light ray enters the water-bubble interface, bends away from the normal, and then enters the bubble-air interface, bending towards the normal again. This bending of the light ray is caused by the difference in the refractive indices of water and air.
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