Reflection and Refraction Basics

A ray of light traveling from air into crown glass strikes the surface at an angle of 30 degrees. What is the angle of refraction? (air n=1, crown glass n=1.532)

• 39.7 degrees
• 19.2 degrees
• 59.1 degrees
• 12.3 degrees

According to the Law of reflection, a light ray striking a mirror

• continues moving through the mirror in the same direction
• moves into the mirror at a slightly different angle
• bounces off the mirror toward the direction it came from
• bounces off the mirror at the same angle it hits.

Glass has a _____________ index of refraction than air.

• Equal
• Greater
• Less
• Impossible to say

The fact the two angles are the same is an example of....

• Refraction
• Angle of Incidence
• Law of reflection
• Magnification

The measure of how much light refracts is called...

• Refraction
• Law of reflection
• reflected ray
• Index of refraction

This shows the phenomenon known as....

• reflection
• refraction
• mirrors
• focal point

Light travels through a liquid at 2.25 x10⁸ m/s. What is the index of refraction of the liquid?

• 1.33
• 1.0
• 1.523
• 2.45

Light traveling through  air encounters a second medium which slows the light to 1.88 x 10⁸ m/s.  What is the index of refraction the second medium?

• 1.00
• 1.498
• 2.45
• 1.60

The velocity of light in vacuum is _______ m/s.

• 3x10⁸
• 3x10¹²
• 3x10⁶
• 3x10¹⁰

The index of refraction of any medium is always _______.

• less than 1
• greater than 1
• 1
• 0