ray-optics-and-optical-instruments Question 16
Question: Q. 9.5, Page 55]
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Solution:
Ans. Correct option : (c)
Explanation : According to the Cauchy relationship,
Smaller the wavelength higher the refractive index and so that smaller the critical angle
So, light rays are passing from denser to rarer medium. As
So, critical angle for
As we know that,
So, it will not get total internal reflection and
So, light of blue and green colour get total internal reflection.