Chapter 19 Optics Review Physics 2

For reflection in a plane mirror, how does the angle of incidence compare to the angle of reflection?

• greater

• less

• equal

• not enough information

The law of reflection states that if the angle of incidence is 30*, then the angle of reflection is _____

• 30*

• 60*

• 90*

• 45*

What do convex mirrors cause light rays to do?

• converge

• diverge

• go straight

• nothing

When total internal reflection occurs, the angle of incidence is _____ to the critical angle

• greater

• less

• equal

• can't tell

The iris controls the amount of light entering the eye by adjusting the size of the________

• retina

• optic nerve

• rods and cones

• pupil

The angle that the reflected ray makes with a line drawn perpendicular to the reflecting surface is called ______

• normal line

• angle of refraction

• angle of reflection

• angle of incidence

What is the point called at which rays reflected from a concave mirror intersect?

• central axis

• normal line

• focal point

• object

Does air have a high or low index of refraction?

• high

• low

• neither

• no one knows

What kind of telescope uses lenses and mirrors?

• reflecting telescope

• refracting telescope

• microscope

• microwave

Nearsightedness results when light rays from distant objects focus in front of the ________

• pupil

• lens

• retina

• iris