Question

Why does a light ray always travel in a straight line in a medium ?
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Answer 1

Answer:

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Explanation:

• Light travels in straight lines primarily due to the fact that light is a wave. ... Since diffraction is very small effect, light is generally assumed to travel in straight line ...

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Answer 2

Answer:

Light travels in straight lines primarily due to the fact that light is a wave. However, light can change its path (away from a straight line) when it is incident on certain obstacles. This effect is commonly reffered to as diffraction. Since diffraction is very s

Explanation:

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