Combine Snell's Law with the relationship between the speed of light and the index of refraction to determine an angle of incidence or refraction or a speed of light value. Includes 5 problems.
Light travels at a speed of 2.13x108 m/s in an unknown material. A ray of light entering the material from air is observed to refract at an angle of refraction of 34.4°. What was the angle of incidence?
Angle of Incidence
°
Light traveling at 2.02x108 m/s through a transparent, plastic block is approaching its boundary with air at an angle of incidence of 25.2°. Determine the angle of refraction for this light ray in air.
Angle of Refraction
Light travels with a speed of 2.105 x 108 m/s in mineral oil. A ray of light traveling through air is incident on the surface of mineral oil at an angle of incidence of 46.1°. Calculate the angle of refraction.
A ray of light in water (n = 1.333) approaches the boundary with a second substance at an angle of incidence of 61.8° and refracts with an angle of refraction of 43.2°. Determine the speed of light in the second substance.
Speed of Light
m/s
Light in air approaches the boundary of oil at an angle of 45.6 degrees with respect to the normal. The light travels at a speed of 2.37 x 108 m/s through the oil. Determine the angle of refraction.