Lenses

Sara is using a magnifying glass to closely examine her stamp collection. Which type of lens is found in a magnifying glass.

• bifocal

• concave

• convex

• prismatic

How does a concave lens differ from a convex lens?

• A convex lens is another way to describe a plane mirror; a concave lens is curved

• A concave lens is curved inward on both sides; a convex lens is on only one side

• A convex lens has a thick center and thin edges, a concave lens has a thin center and thicker edges

• A convex lens has a thin center and thick edges. a concave lens has a thick center and thinner edges

A ____ lens is sometimes called a converging lens because it_____.

• convex; makes parallel light rays curve outward or diverge

• concave; makes parallel light rays travel at a faster speed than before they encountered the lens

• convex, makes parallel light rays passing through it bend inward and meet (converge) at a spot just beyond the lens known as the focal point.

• concave; makes parallel light rays passing through it bend inward and meet (converge) at a spot just beyond the lend known as the focal point.

A concave lens has an inward curved shape. It refracts light outward from the lens. They light rays spread apart as they exit the lens. Which represents a concave lens?

• A

• B

• A and B

• neither A or B

A lens is a ____________medium bounded by two surfaces.

• opaque

• translucent

• transparent

Tags

NGSS.MS-PS4-2

A converging lens is also known as a ____ lens.

• convex
• concave
• double
• refracted

What does the word "diverging" mean?

• to spread apart
• to come together
• parallel
• perpendicular

Tags

NGSS.MS-PS4-2

A diverging lens is also known as a ____lens.

• refracted
• diffracted
• convex
• concave

Which describes a convex lens?

• triangular in shape
• more transparent in the middle
• thicker on the edges than in the middle
• thicker in the middle than on the edges

This image is.....

• inverted and smaller

• inverted and larger

• not inverted and smaller

• not inverted and larger