Reflection & Refraction recap

The bouncing of light off an object

• basketball

• refraction

• reflection

• echo

A ___ lens makes objects appear bigger.

• concave
• convex
• prism
• flat

Light will be reflected in many different directions off of a ___ surface.

• rough
• smooth
• flat
• mirrored

What is the angle of reflection equal to?

• The angle of refraction

• The angle of incidence

• The angle of absorption

• The angle of light

What might explain why light travels in a straight line?

• If there is nothing to interfere with light waves, they should travel in a straight line.

• Light waves will always travel in a straight line, even if they come into contact with another object.

• Light waves don't travel in a straight line.

• Light waves travel in a straight line because sound waves travel in a straight line.

In the diagram, which letter represents the reflected ray?

• A

• B

• C

• D

For a total internal reflection, which of the following is correct?

• Light travels from rarer to denser medium.

• Light travels from denser to rarer medium.

• Light travels in air only.

• Light travels in water only.

The speed of light in an isotropic medium depends on,

• its intensity

• its wavelength

• the nature of propagation

• the motion of the source w.r.t medium

Glass has a _____________ index of refraction than air.

• Equal
• Greater
• Less
• Impossible to say

If the angle of incidence of light traveling through air, and then striking water is 30 degrees what is the angle of refraction? (n=1 air, n=1.33 water)

• 15 degrees
• 22 degrees
• 43 degrees
• 17 degrees