Light of velocity 3 x 108ms-1 is incident on a material of reflective of index n. If the velocity of light is reduced to 2.4 x 108ms-1 in the material, what is n?
A
2.33
B
2.25
C
1.33
D
1.25
Verified Correct Answer: D.
Physical Principles & Numerical Solution
n = \(\frac{3 \times\ 10^8}{2.4 \times\ 10^8}\)
n = 1.25
Source: Myschool Past Questions Archive (Record #27710)