Convex and Concave Lenses

What is a lens?

• A transparent glass or plastic with curved sides that can bend light

• A device used to explode the wonders of the universe

• A tool for measuring refraction

• A type of mirror

What is refraction?

• The bending of light rays as they pass through a lens

• The process of exploding the wonders of the universe

• The redirection of light rays as they pass from one medium to another

• The reflection of light off a mirror

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How are convex and concave lenses different?

• Convex lenses are thicker in the middle, while concave lenses are thicker at the edges

• Convex lenses are thicker at the edges, while concave lenses are thicker in the middle

• Convex lenses have curved surfaces that are curved outwards, while concave lenses have surfaces that are curved inwards

• Convex lenses have surfaces that are curved inwards, while concave lenses have curved surfaces that are curved outwards

What happens to light rays when they pass through a convex lens?

• They slow down and bend towards the normal line

• They speed up and bend away from the normal line

• They continue in a straight line without bending

• They reflect off the lens

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What is the focal point of a convex lens?

• The point where light rays converge after passing through the lens

• The point where light rays diverge after passing through the lens

• The point where light rays reflect off the lens

• The point where light rays pass through the lens without bending

What happens to light rays when they pass through a concave lens?

• They slow down and bend towards the normal line

• They speed up and bend away from the normal line

• They continue in a straight line without bending

• They reflect off the lens

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NGSS.MS-PS4-2

What is the focal point of a concave lens?

• The point where light rays converge after passing through the lens

• The point where light rays diverge after passing through the lens

• The point where light rays reflect off the lens

• The point where light rays pass through the lens without bending

What type of image is formed by a concave lens?

• A real image

• A virtual image

• An inverted image

• A magnified image

What is the distance from the center of the lens to the focal point called?

• Focal length

• Refraction distance

• Convergence point

• Incident ray

How does the focal length of a lens affect the size of the image?

• A longer focal length will make the image smaller

• A longer focal length will make the image larger

• A shorter focal length will make the image smaller

• A shorter focal length will make the image larger