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Question
State whether the following statement is true or false:
Refraction occurs because light slows down in denser materials.
Solution
True.
The refraction of light is due to the change in the speed of light on going from one medium to other. The speed of light ray slows down in denser materials.
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Numerical problems.
The speed of light in water is 2.25 × 108 ms–1. If the speed of light in vacuum is 3 × 108 ms–1, calculate the refractive index of water.
Which object use the reflection of light?
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Light is refracted or bent while going from one medium to another because of its ______ changes.
