Refraction

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

• Light rays strike the medium at an angle

• Light crosses the boundary that separates the media.

• Light travels from one transparent medium to another.

• Light rays strike the medium parallel to the normal.

In which of the following situations is refraction observed?

• the virtual image of a plane mirror

• polarized light from a car’s hood

• light entering a pool of water

• a real image formed by a concave mirror

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

• bent toward the normal.

• bent away from the normal.

• not bent.

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

If light passes from glass into air, the ray will

• bend toward the normal.

• bend away from the normal.

• not bend.

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

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

• does not occur.

• is at its maximum.

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

• none of the above

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

• f and v

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

• difficult to measure.

• small.

• large.

• insignificant.

The index of refraction is the ratio of

• the wavelength of light versus the frequency of light.

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

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

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

As a result of refraction, objects appear to be in_________ positions.

• duplicate

• inverted

• different

• identical

The equation for Snell's Law is

• n_rsinθ_i = n_isinθ_r

• n_isinθ_i = n_rsinθ_r

• n_isinθ_r = n_rsinθ_i

• n_icosθ_i = n_rcosθ_r