The critical angle for total internal reflection at a liquid-air interface is 42.5°.
(a) If a ray of light traveling in the liquid has an angle of incidence at the interface of 35.0o, what angle does the refracted ray in the air make with the normal?
(b) If a ray of light traveling in air has an angle of incidence at the interface of 35.0°, what angle does the refracted ray in the liquid make with the normal?