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| D.
Reflection and |
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| Refraction |
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| n | Reflection
occurs when a ray of |
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| light hits a
boundary and |
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| bounces back
into the same |
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| medium |
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| n | Refraction
occurs when a ray |
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| of light enters
a new medium |
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| and changes
direction because |
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| of a change in
speed |
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