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प्रश्न
What is the cause of refraction of light when it passes from one medium to another?
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उत्तर
The refraction of light (or change in the direction of path of light in other medium) occurs because light travels with different speeds in different media. When a ray of light passes from one medium to another, its direction (except for ∠i = 0°) changes because of change in its speed.
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