Light, Mirrors, and Lenses

Which medium has the highest index of refraction?

• vacuum of space

• air

• water

• glass

What type of mirror is this?

• convex

• plane

• concave

• normal

What does point F represent?

• focus

• focal point

• divergence

• x

Which cells in your eye enable a person to see colors?

• rods

• cones

When light enters your eye it is refracted and forms an image in the back of your eye on your ____________.

• lens

• cornea

• retina

A wave enters a flat mirror at a 30 degree angle. What will the angle of reflection be?

• 90 degrees

• 20 degrees

• 0 degrees

• 30 degrees

Which color has the most energy?

• red

• blue

• violet

What will happen to light passing through a concave lens?

• it will converge (come together)

• it will diverge (spread apart)

• it will continue in a straight line

Which cells in your eye are sensitive to low light levels?

• rods

• cones

Which lens is a concave lens?

• A

• B