Applying Snell's law for refraction from denser to rarer medium, we get
μdenser×sinC=μair×sin90∘⇒vdensercsinC=vairc×1⇒t210xcsinC=t1xc⇒sinC=t210t1⇒C=sin−1(t210t1)
Light travels a distancexin timet_1 in air and 10x in time t_2 in another denser medium. What is the critical angle for this medium?
NEET UG 2023 — Physics Optics
2023mcqhard
Light travels a distancexin timet1 in air and 10x in time t2 in another denser medium. What is the critical angle for this medium?
Official previous-year question
Held on 30 Apr 2023 · Verified 9 Jul 2026.
Options
- A
sin−1(t210t1)
- B
sin−1(t1t2)
- C
sin−1(t110t2)
- D
sin−1(10t2t1)
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