The image below shows the refraction of light in three transparent rectangular blocks, X, Y and Z, made of different materials when they are placed in air. The angle of incidence is different in each case but the angle of refraction is the same in all three blocks. Compare the speed of light in the three blocks. Justify your answer.

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Refractive Index and Speed of Light in Different Media, Refractive Index of a Medium | PadhAiPro

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TextRefractive Index and Speed of Light in Different MediaRefractive Index of a Medium

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