Light travels a distance x in time t₁ in air and 10x in time t₂ in another denser medium. What is the critical angle of the second medium?
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Light travels a distance x in time t₁ in air and 10x in time t₂ in another denser medium. What is the critical angle of the second medium?

G1 Physics · Accepted Answer

Step 1: v_air = x/t₁ and v_medium = 10x/t₂. Step 2: Refractive index μ = v_air/v_medium = t₂/(10t₁). Step 3: Critical angle satisfies sin C = 1/μ = 10t₁/t₂. Final answer: (B) C = sin⁻¹(10t₁/t₂).