CUET · PHYSICS · PYQ PAPER 2025
Total internal reflection of a ray of light is possible when the ray goes from
- A denser to rarer medium and the angle of incidence is greater than the critical angle
- B denser to rarer medium and the angle of incidence is less than the critical angle
- C rarer to denser medium and the angle of incidence is greater than the critical angle
- D rarer to denser medium and the angle of incidence is less than the critical angle
Answer & Solution
Correct Answer
(A) denser to rarer medium and the angle of incidence is greater than the critical angle
Step-by-step Solution
Detailed explanation
Total Internal Reflection (TIR) occurs only when two specific conditions are met: The ray of light must travel from an optically denser medium to an optically rarer medium (e.g., from water to air). The angle of incidence (I) must be greater than the critical angle (C) for that…
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