A beam of light crosses a boundary between two different media. Refraction can occur if

1.   ?    there is no change in the speed of the wave
2.   ?    the media have different indices of refraction
3.   ?    the angle of incidence is O Degrees
4.   ?    all of the light is refracted

Which characteristic of a wave changes as the wave travels across a boundary between two different media?

1.   ?    period
2.   ?    frequency
3.   ?    speed
4.   ?    phase

In which substance does light travel the slowest?

1.   ?    air
2.   ?    diamond
3.   ?    water
4.   ?    crown glass

The speed of light in glycerol is approximately

1.   ?    3.0 x 10**8 m/s
2.   ?    2.0 x 10**8 m/s
3.   ?    4.4 x 10**8 m/s
4.   ?    1.0 x 10**7 m/s

If the speed of light in a medium is 2.0 x 10**8 meters per second, the index of refraction for the medium is

1.   ?    2.0
2.   ?    1.0
3.   ?    .67
4.   ?    1.5

If a ray of light is incident upon an air surface at an angle greater then the critical angle, the ray will

1.   ?    partly refract and partly diffract
2.   ?    partly refract and partly reflect
3.   ?    refract, only
4.   ?    reflect, only

When a beam from two coherent light sources are projected on a screen, alternating bright and dark areas are produced. The phenomenon illustrates light

1.   ?    dispersion
2.   ?    refraction
3.   ?    polarization
4.   ?    interference

When a ray of white light is refracted, the component color that has the greatest change in direction is

1.   ?    green
2.   ?    orange
3.   ?    red
4.   ?    violet

Which will most likely occur when light passes through a double slit?

1.   ?    diffraction, only
2.   ?    interference, only
3.   ?    refraction
4.   ?    diffraction and interference