Question
The refractive index of the human cornea is about $1.4$. If you can see clearly in air, why can't you see clearly underwater? Why do goggles help?
Step 1
When light enters the human eye, it passes through the cornea, which is the transparent front part of the eye. The cornea has a refractive index of about 1.4, which means that light bends (or refracts) when it passes through the cornea. Show more…
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