A glass of refractive index 1.60 is in contact with water of refractive index 4/3. The critical angle for the glass-water interface is closest to:
Options

Question

A glass of refractive index 1.60 is in contact with water of refractive index 4/3. The critical angle for the glass-water interface is closest to:

G1 Physics · Accepted Answer

sin C=μ of water/μ of glass=(4/3)/1.6=5/6, giving C≈56.4°.