light Flashcards
1
Q
reflection?
A
wave travels in one medium strikes the surface of another medium and changes direction so that it returns back to the medium
2
Q
law of reflection?
A
states incident angle (i) and reflected angle (r) are always the same
3
Q
refraction?
A
speed at which a wave travels is dependent upon the medium in which it travels along or through
4
Q
refractive index?
A
denser medium has large refractive index..
light travels slowly in media with higher indicies..
OR GOOGLE SAYS
a value calculated from the ratio of the speed of light in a vacuum to that in a second medium of greater density.
5
Q
Concave lens?
A
causes light rays to diverge or spread out
