The speed of light changes as it enters from one medium to another as the optical density of the medium changes.
The change in the speed of light, as it travels through various media, is depicted in the following table.
|
Media |
Change in speed of light |
|
A to B |
increases |
|
B to C |
decreases |
|
C to D |
decreases |
Which of the following represents the correct descending order of optical densities of the media?
1
A > D > C > B
2
A > C > B > D
3
D > B > C > A
4
A > B > C > D