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aleksandrvk [35]
3 years ago
15

What is refraction of light​

Mathematics
1 answer:
USPshnik [31]3 years ago
8 0

Answer:

Refraction is what happens when light passes through some medium and changes it's direction because of it. For instance, when light travels through a lens light is bent as it goes from air to glass and back to air again. :)

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Evaluate the expression when x=20 and y=4.
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Answer:

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