You are given four sources of light each one providing a light of a single color-red, blue, green and yellow. Suppose the angle of refraction for a beam of yellow light corresponding to a particular angle of incidence at the interface of two media is `90^@`. Which of the following statements is correct it the source of yellow light is replaced with that of other lights without changing the angle of incidence ?

Options

A. The beam of red light would undergo total internal reflection
B. The beam of red light would bend towards normal while it gets refracted through the second medium
C. The beam of blue would undergo total internal reflection
D. The beam of green light would bend away from the normal as it gets refracted through the second medium

Explanation

To solve the problem, we need to analyze the situation described regarding the refraction of light through two media and the conditions for total internal reflection (TIR). Let's break it down step by step.

### Step 1: Understanding the Critical Angle
Given that the angle of refraction for yellow light is 90 degrees at a certain angle of incidence, we can conclude that this angle of incidence corresponds to the critical angle for yellow light. The critical angle is defined as the angle of incidence above which total internal reflection occurs when light travels from a denser medium to a rarer medium.

### Step 2: Applying Snell's Law
Using Snell's Law, we can express the relationship between the refractive indices and the angles:
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