7.02: Light: Refraction: Refractive Index Calculations

A ray of light travels from air into glass at an incident angle of 30^o. Find the angle of refraction. (The refractive index of glass is 1.5)

• 19.7^o

• 19^o

• 19.5^o

• 19.3^o

A ray of light enters air from glass. The angle of incidence is 35^o and the angle of refraction is 69^o. Find the refractive index of the glass.

• 1.62

• 1.63

• 1.64

• 1.65

A ray of light leaves a rectangular diamond and enters air. It makes an angle of refraction of 15^o. If the refractive index of a diamond is 2.42, find the angle of incidence.

• 6.3 degrees

• 6.2 degrees

• 6.1 degrees

• 6 degrees

The refractive index of diamond is 2.42. A ray of light passing from inside of a diamond into air makes an angle of incidence of 20^o. Find the angle of refraction.

• 54.9 degrees

• 55.9 degrees

• 56.9 degrees

• 57.8 degrees

A pool of water is 10m deep. If the bottom of the pool is viewed perpendicularly from air, how deep does it appear? (refractive index of water = 1.33)

• 7 m

• 7.52 m

• 6.6 m

• 5.52 m

A pool of water appears to be 0.8 m deep when it is viewed perpendicularly from above. What is its actual depth? Refractive index of water = 1.33

• 1.07 m

• 2 m

• 1.08 m

• 1.09 m