Question

For which colour the refractive index of light is highest?

A Red Correct Answer Incorrect Answer
B Green Correct Answer Incorrect Answer
C Blue Correct Answer Incorrect Answer
D Violet Correct Answer Incorrect Answer

Solution

The refractive index of light is highest for violet light. In a phenomenon known as dispersion, different colours of light are refracted (bent) by different amounts when they pass through a transparent material, such as glass or a prism. This causes them to spread out into a spectrum.

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