Question

In which meduim is the wavelength of yellow light the shortest?
a. flint glass
b. crown glass
c. diamond
d. zircon

Please help, I dont understand how to solve this at all !!!!!!

Answer 1

do you know the refractive index of those options?

Answer 2

This is data of the refractive index of those option ( http://en.wikipedia.org/wiki/List_of_refractive_indices)

Diamond: 2.419
Flint glass (pure) : 1.60 - 1.62
Crown glass (pure): 1.50 - 1.54
Zircon: 2.15 - 2.18

The answer is c. Diamond, because diamond has biggest value of the refraction index.
this is equation of that:
\[n_{1}.\lambda_{1}=n_{2}.\lambda_{2}\]