A ray of light travels through air (n = 1.00) and approaching the boundary with water (n = 1.333). The angle of incidence is 39.0°. Determine the angle of refraction.

A ray of light travels from flint glass (n=1.62) into ethanol (n=1.36). The angle of refraction in the ethanol is 25.1°. What is the angle of incidence in the glass?

The diagram at the right shows a light ray passing from air into an unknown liquid. Angle A is 33.6° and Angle B is 24.6°. Determine the index of refraction of the unknown liquid.

The diagram at the right shows light refracting from material A into material B. The index of refraction of material A is 2.02. Use your protractor to measure angles and determine the index of refraction of material B. (HINT: The angle measures are multiples of 15 degrees.)

A light ray is traveling through crown glass (n = 1.52) and approaching the boundary with water (n = 1.333) as shown in the diagram at the right.

Consider two parallel layers – one made of linseed oil (n = 1.41) and the other made of water (n = 1.333). The light is observed to approach the boundary between the linseed oil and the water with an angle of incidence of 34.3°.

Two flat plates – one made of glass (n = 1.64) and the other of acrylic (n = 1.46) rest on top of each other so as to form two parallel layers of different materials. A ray of light in air is incident on the top plate of glass and eventually emerges from the bottom acrylic layer with an angle of refraction of 39.7°. Determine the angle of incidence in air.