CBSE 2026 · Region 3 · Set 3 · Q9 · 1 mark
A ray of yellow light undergoes total internal reflection when it is incident at the interface of two media. This ray is successively replaced by the ray of blue, green and red lights. Which of the following statements is true if the angle of incidence is same in all cases ?
Official answer
From CBSE’s own marking scheme for this paper.
(C)
Total internal reflection occurs for both green and blue lights.
Ray Optics and Optical InstrumentsTotal Internal ReflectionAnalysemcqmedium
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CBSE Class 12 Physics past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.