GA. S8P4 f: Understanding Lenses

Which type of lens is thicker in the middle and converges light rays to a single point?

• Concave Lens

• Convex Lens

• Plano Concave Lens

• Biconcave Lens

David is using a concave lens to focus sunlight on a piece of paper. He notices that the lens is _______ in the middle and causes the light rays to _______.

• thicker, converge

• thinner, spread out

• thicker, spread out

• thinner, converge

Tags

NGSS.MS-PS4-2

William is setting up a projector for a movie night. Which type of lens should he use to form a real image on the screen?

• Convex lens

• Concave lens

• Flat lens

• Cylindrical lens

Fill in the blank: A virtual image is formed when the object is placed _______ the focal point of a concave lens.

• inside

• outside

• at

• beyond

Harper is using a magnifying glass to focus sunlight onto a piece of paper. What is the function of the convex lens in the magnifying glass?

• Diverges light rays

• Converges light rays to a single point

• Reflects light rays

• Absorbs light rays

Tags

NGSS.MS-PS4-2

A lens is a ______ optical element that ______ light rays to form images.

• A) transparent, converges

• B) opaque, diverges

• C) transparent, reflects

• D) opaque, absorbs

Fill in the blank: A virtual image is formed when light rays appear to ______.

• A) Converge

• B) Diverge

• C) Refract

• D) Reflect

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

What kind of lens is a magnifying glass?

• Convex Lens
• Concave Lens

Tags

NGSS.MS-PS4-2