Relation between focal length and refractive index?

Answer 1

the wave's speed v is related to both the frequency f and the wavelength l :v = l f.

Combining the above expression for velocity with the definition of index of refraction, we find a relationship between the wavelength l = v/f in a medium and the wavelength l 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.

Answer 2

As refractive index of the material of a medium is equal to the ratio of the speed of light wave in vacuum to that in the medium and speed is equal to the product of frequency and wavelength and more over for a given frequency

Refractive index =

wavelength of the light in the medium / wavelength of light in vacuum

---------------------------------------------------------------------------------

Hello Alcohen2006, no you have given a wrong correction.

C vacuum / C medium = wavelength in vacuum / wavelength in medium

as velocity is directly proportional to the wavelength as frequency remains constant

Answer 3

Mathematically

1/f=(r-1)(R2-R1)/R1R2

This is called the Lens Maker's Formula. The r stands for the relative refractive index of the lens. The R1 and R2 are the radius of curvature of the 2 lenses. The principal f is the focal length of the lens.

Answer 4

depend on the solute,solvent,temperature and wavelength

Answer 5

for a lens, to find the relation between refractive index and focal length, use the lensmaker's formula

n1/f=(n2-n1) (1/r1 + 1/r2)

Answer 6

The relation between the angle of refraction and refactive index is:

Sine i/Sine r=Refractive index

where,i=angle of icidence

r=angle of reflection

Answer 7

They have none. They describe properties that are unrelated.