a. it is a change in direction of light when it passes from
one transparent
medium into another of different optical density
b. light is deviated away from the normal when it enters an optically
dense medium from a less dense medium.
c. the velocity of light is changed during refraction
d. the wavelength of the light is changed during refraction
e. the angle of refraction is different for light of different wavelength
2. The following are true about the refractive index of a material:
a. the absolutie refractive index of a material is always greater
than its
refractive index
b. the refractive index of a material is usually measured with ultraviolet
light
c. the refractive index of a medium differs for light of different wavelengths
d. the deviation of light increases with the increase in refractive
index of the
material that it enters
e. a material with high refractive index will reduce the speed of light
more
than one with lower refractive index