Quiz on Refraction, Total Internal Reflection, and Image Formation by Lenses

Which type of lens is used in eyeglasses for nearsightedness?

• a) Convex lens

• b) Concave lens

• c) Plano-convex lens

• d) Plano-concave lens

Which type of lens is thicker at its center than at its edges and converges light rays that pass through it?

• a) Convex lens

• b) Concave lens

• c) Plano-convex lens

• d) Plano-concave lens

What is the term for the line perpendicular to both faces of a lens at its optical center?

• a) Principal axis

• b) Optical axis

• c) Normal line

• d) Central axis

What is the term for the phenomenon where white light splits into its seven component colors when it passes through a prism?

• a) Reflection

• b) Refraction

• c) Dispersion

• d) Diffraction

What is the term for the point in the center of a lens through which light can pass without being refracted?

• a) Optical center

• b) Center of curvature

• c) Radius of curvature

• d) Focus

What is the term for the phenomenon where light traveling from a medium with a higher index of refraction to one with a lower index is completely reflected into the original medium?

• a) Reflection

• b) Refraction

• c) Total internal reflection

• d) Dispersion

Which type of lens is thinner at its center than at its edges and diverges light rays that pass through it?

• a) Convex lens

• b) Concave lens

• c) Plano-convex lens

• d) Plano-concave lens

What is the term for the distance between the optical center of a lens and the center of curvature?

• a) Radius of curvature

• b) Focal length

• c) Aperture

• d) Magnification

Which type of lens forms only virtual images?

• a) Convex lens

• b) Concave lens

• c) Plano-convex lens

• d) Plano-concave lens

What is the term for the center of the spherical surface from which a lens has been cut?

• a) Optical center

• b) Center of curvature

• c) Radius of curvature

• d) Focus