Question

write relation b/w refractive index and wavelength of light .draw graph to show the variation of ref.indx of material with wavelength.for colours:

1> red or yello will the ref. indx be more ?

Answer 1

Combining the above expression for velocity with the definition of index ofrefraction, we find a relationship between the wavelength = v/f in a medium and the wavelength 0 = c/f in vacuum: In the above equation, the frequencies cancel because frequency does not change as light moves from one medium to another.