Lenses and Refraction Quiz

What is a lens?

• A transparent glass of plastic with curved sides

• A type of mirror

• A type of metal

• A type of fabric

What is the process of redirection of light rays as they pass from one medium to another called?

• Absorption

• Diffraction

• Refraction

• Reflection

How can you differentiate between a convex and concave lens?

• Convex lens is thicker in the middle, concave lens is thicker in the middle

• Convex lens has thinner edges, concave lens has thicker edges

• Convex lens has curved surfaces inwards, concave lens has curved surfaces outwards

• Convex lens has curved surfaces outwards, concave lens has curved surfaces inwards

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

• They stop moving

• They continue in a straight line

• They diverge away from each other

• They converge at a single point

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

• They converge at a single point

• They continue in a straight line

• They diverge away from each other

• They stop moving

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

• Focal center

• Focal distance

• Focal point distance

• Focal length

What causes the image to be smaller or larger than the original object?

• The shape of the lens

• The size of the lens

• The color of the lens

• The focal length of the lens

What is the bending of light rays in a certain way called?

• Reflection

• Refraction

• Diffraction

• Absorption

What is the touching point of the ray and the lens called?

• Incident point

• Focal point

• Refraction point

• Normal point

What happens to the speed of light when it enters a convex lens?

• It slows down

• It speeds up

• It remains the same

• It stops