State the cause of refraction ?
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2
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Refraction means that the light waves are bent, or change direction when they enter a new medium. This happens because as the wave enters the new medium it changes speed. ... This difference of speed causes the wave front to bend which we detect as refraction.
Explanation:
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5
Answer:
1-due to change in speed
2-when light passes across boundary between two medium waves
3-moves from material with one density into a medium with a different density
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