MHT CET 2024 Physics question

Critical angle of light passing from glass to air is minimum for wavelength of

(A)red colour
(B)yellow colour
(C)green colour
(D)blue colourCorrect

Answer: (D)

Solution

The critical angle for glass to air is given by . A smaller needs a larger refractive index . By Cauchy's relation , is larger for a shorter wavelength. Among

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Question ID VK-096608