Mirrors and lenses

The optical axis is an imaginary line __ to the center of a concave mirror.

• perpendicular

• parallel

• tangent

A light ray that travels parallel to the optical axis of a concave mirror reflects

• back toward its point of origin.

• down and behind the mirror.

• back through the focal point.

• away from the focal point.

An object is placed between one and two focal lengths from a concave mirror. Describe the image formed.

 

• real

• virtual

• upright

• inverted

• enlarged

Describe the image of an object that is 38 cm from a concave mirror with a focal length of 10 cm.

• real

• upright

• inverted

• reduced

Light rays from the object--------- after being reflected from the convex mirror. Light rays parallel to the optical axis reflect--------- the focal point.

• diverge-away from

• converge-toward

• return to their point of origin

Which describes the image formed by a convex mirror?

• virtual-upright-reduced

• real-inverted-enlarged

• real--upright-reduced

• real-inverted-same size

Which can your brain perceive though no light rays pass through them?

• lenses

• real images

• virtual images

• mirrors

A girl 130 centimeters tall stands 3 meters from a plane mirror. The girl's image will be------- ,--------- , and ---------- the girl. Her image will appear to form--------- .

• real- inverted-larger than-3 meters in front of the mirror

• virtual-upright-the same size as- 3 meters behind the mirror

• real-inverted-smaller than-6 meters behind the mirror-

• virtual-invertedthe same size as-130 centimeters behind the mirror

Three mirrors are studied and their properties are recorded in the table.

• concave mirrors.

• convex mirrors.

• plane mirrors.

If you stand 2 m away from a plane mirror, how far away does your reflection appear to be from you?

__ m

• 2 m

• 4m

• 1m

• 6m