JEE Main 2026 — Ray Optics Question with Solution
JEE Main 2026 (23 January Shift 2)
Question
A prism of angle and refractive index is coated with thin film of refractive index 1.5 only at the back exit surface. To have total internal reflection at the back exit surface the incident angle must be
( and )
( and )
Choose an option
Show full solutionCorrect option: D
Correct answer
DBoth (1) & (3)
Step-by-step explanation
For T I R at back surface
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This is a previous-year question from JEE Main 2026, covering the Ray Optics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.