Write the Complete Sentences

Name______Class______Date______

: Refraction

Write the complete sentences.

_____1.In order for refraction to occur, all of the following conditions must be met except which one?

a.Light rays strike the medium at an angle.

b.Light crosses the boundary that separates the media.

c.Light travels from one transparent medium to another.

d.Light rays strike the medium parallel to the normal.

_____2.In which of the following situations is refraction observed?

a.the virtual image of a plane mirror

b.polarized light from a car’s hood

c.light entering a pool of water

d.a real image formed by a concave mirror

_____3.When light moves from a material in which its speed is higher into a material in which its speed is lower, the ray is

a.bent toward the normal.

b.bent away from the normal.

c.not bent.

d.bent toward or away from the normal depending on the light’s wavelength.

_____4.If light passes from glass into air, the ray will

a.bend toward the normal.

b.bend away from the normal.

c.not bend.

d.bend toward or away from the normal depending on the light’s wavelength.

_____5.If an incident light ray strikes a transparent medium parallel to the normal, then refraction

a.does not occur.

b.is at its maximum.

c.depends on the speed of the light in that medium.

d.none of the above

_____6.Which of the following factors change as light waves pass from one transparent medium into another?

a.f and v

b.v and 

c.f and 

d.f, v, and 

_____7.When a light ray passes from a vacuum into a substance with a large index of refraction, the amount of bending experienced by the ray is

a.difficult to measure.

b.small.

c.large.

d.insignificant.

_____8.The index of refraction is the ratio of

a.the wavelength of light versus the frequency of light.

b.the frequency of light versus the speed of light in a medium.

c.the wavelength of light versus the speed of light in a vacuum.

d.the speed of light in a vacuum versus the speed of light in a medium.

9.. Find the angle of refraction of a ray of light that enters fused quartz
(nr = 1.458) from water (ni = 1.333) at an angle of 35.0.