NEET Physics Refraction MCQ Question
A ray of light passes through a triangular glass prism with an angle of incidence of 40 degrees. If the refractive index of the prism is 1.5, what is the angle of refraction when the light enters the prism?
25.4 degrees
28.1 degrees
30.0 degrees
35.7 degrees
Correct Answer
Detailed Explanation
Using Snell's Law at the first interface, n1 * sin(i) = n2 * sin(r), with n1 = 1 (air), n2 = 1.5, and i = 40 degrees, we find r ≈ 28.1 degrees.
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