NDA 2023 Physics question

In the dispersion of white light by a common glass prism, which one among the following is correct ?

(A)Red light deviates the most because red light has highest speed in prism
(B)Blue light deviates the most because blue light has highest speed in prism
(C)Red light deviates the most because red light has lowest speed in prism
(D)Blue light deviates the most because blue light has lowest speed in prismCorrect

Answer: (D)

Solution

The refractive index of glass is greater for shorter wavelengths. Blue light

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Question ID VK-032439