Convex and Concave Lenses and the Eye

The image produced by a CONVEX lens is: 

• Smaller than the original

• Larger than the original 

• The same size as the original 

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

Which one of these is a convex lens?

• 
• 
• None of the above

Where are lenses used? (multiple correct)

• Telescopes

• Tables

• Eye-glasses

• Binoculars

A diverging lens is also known as a ____lens.

• refracted

• diffracted

• convex

• concave

_____ lenses refract light rays in toward a central point. When this lens is held close to your eye, the image is magnified and right side up.

• Concave

• Convex

• Prismatic

• Refractive

A converging lens is also known as a ____ lens.

• convex

• concave

• double

• refracted

This image is...

• Inverted and smaller

• inverted and bigger

• not inverted and smaller

• not inverted and bigger

Why does light refract when it encounters the glass in a lens?

• because it speeds up, which causes it to bend

• because it slows down, which causes it to bend

• because it hits a dense medium, which causes it to bounce off

• because it gets absorbed, which causes it to lessen in intensity

Tags

NGSS.MS-PS4-2

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.