Quiz on Light and Optics

What is the nature of light according to Newton's particle model?

• A form of energy without mass

• A mixture of waves and particles

• A stream of particles

• A stream of waves

What is the formula for the energy of a photon?

• E = 1/2 mv^2

• E = mc^2

• E = hf

• E = mv^2

What does Snell's law relate to?

• Dispersion of light

• Reflection of light

• Refraction of light

• Diffraction of light

What is the index of refraction for a vacuum?

• 2

• 0

• 1

• Infinity

What type of lens is thicker at the center than at the edges?

• Biconvex lens

• Biconcave lens

• Converging lens

• Diverging lens

What is the critical angle in total internal reflection?

• The angle of incidence where light is partially reflected

• The angle of incidence where light is completely refracted

• The angle of incidence where light is completely reflected

• The angle of incidence where light is absorbed

What is the primary function of the cornea in the human eye?

• To control the size of the pupil

• To focus light onto the retina

• To detect light intensity

• To produce tears

What type of lens is used to correct nearsightedness?

• Converging lens

• Cylindrical lens

• Diverging lens

• Bifocal lens

What is the power of a lens defined as?

• The distance from the lens to the object

• The reciprocal of its focal length

• The curvature of the lens

• The amount of light it can focus

What happens to light when it enters a denser medium?

• It speeds up

• It slows down

• It reflects completely

• It changes color