Understanding Snell's Law of Refraction

• 0.67

• 1.5

• 2.0

• 3.0

According to Snell's Law, which equation correctly relates the angles and refractive indices of two media?

Which of the following best defines the refractive index?

• The ratio of the angle of incidence to the angle of refraction

• The ratio of the speed of light in vacuum to the speed of light in the medium

• The product of the speed of light in vacuum and the speed in the medium

• The sum of the angles of incidence and refraction

What happens to the angle of refraction when light enters a medium with a higher refractive index?

• It increases

• It decreases

• It remains the same

• It becomes zero

If the refractive index of glass is 1.5 and that of water is 1.33, which statement is true?

• Light travels faster in glass than in water

• Light travels slower in glass than in water

• Light travels at the same speed in both

• Light cannot travel in glass

Which of the following is the correct unit for refractive index?

• m/s

• No unit (dimensionless)

• radians

• degrees