Lenses and Images

A lens that is thinner in the middle than on the outside is called ___.

• diverging

• concave

• convex

• achromatic

What word means to bend light rays away from each other?

• Converging light

• Diverging light

• Virtual Light

• Real Light

An object is placed in front of a converging lens. The lens has a focal length f. The lens produces a real, enlarged image of the object. In which labelled position is the object placed?

• A

• B

• C

• D

which type of lens

• opaque

• convex

• concave

• plano

Tags

NGSS.MS-PS4-2

Outside rear-view mirrors on automobiles are generally ____.

• concave

• convex

• plane

• real images

Tags

NGSS.MS-PS4-2

____ are thick in the middle and thin at the edges.

• Concave lenses

• Convex lenses

• Concave mirrors

• Plane mirrors

A ____ lens has a short focal length and produces a small image that includes much of the surroundings.

• concave

• convex

• telephoto

• wide-angle

When an object is less than ____ focal length(s) away from the lens, the image is no longer real.

• four

• one

• ten

• five

Because they bend light more, thick convex lenses have ____ focal lengths than thin convex lenses.

• longer

• shorter

• wider

• more

Which of these is not true about a real image?

• It is enlarged.

• It is inverted

• It can be projected onto a screen.

• It appears behind the mirror.