A light ray in air enters and passes through a block of glass. What can be stated with regard to its speed after it emerges from the block?
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Answer:What can be stated with regard to its speed after it emerges from the block?
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The speed of a light wave (like any wave) is dependent upon the medium through which it moves. ... Thus, the light moves slower in glass than in air. However, upon exiting the glass and entering the air, the light returns to the original speed
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