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The light ray is entering the water from the air. How should the light ray respond to the change of medium? A. It will slowdown and bend upward B. It will speed up and bend upward C. It will slow down and bend downward D. It will speed up and bend upward

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rabinshrestha41
The answer is "C"

It will slow down and bend downwards towards the middle

AL2006

That depends.  Is the light entering the bottom of the water or the top ?

-- If the light is entering the water from the bottom, it will bend upward.

-- If the light ray is entering the water from the top, it will bend downward.

-- If the light crosses the boundary perpendicular to it, then it won't bend at all.

-- In any case, the light will slow down as it passes from air to water.