(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

An laser is used of wavelength 544 x 10^-7 m (in air) for eye surgery. The index of refraction of the fluid in an eye is n = 1.43. Calculate the frequency of the laser waves in the eye.

n = 1.43

L1=544 x 10^-7

L2=

f =

2. Relevant equations

n=L1/L2

L1 being the wavelength in "air"

L2 being the wavelength in the eye

f=v/L

L=v/f

3. The attempt at a solution

so, given n and L1 its simple to find L2, so I now know the wavelength in the eye. Yet I can't seem to derive the frequency.

so:

n=L1/L2

1.43= (5.44 x 10^-7) / (v/f)

the frequency remains constant for both wavelengths.

so simply I would have to find the velocity of L1 or L2 that would be the frequency "within the eye"

v1/L1=v2/L2

the velocity is not the same so I now have 2 unknown variables.

I KNOW this isn't hard, my minds just shot right now

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Index of refraction, calculate frequency. ~ stuck at 2 unknown variables

**Physics Forums | Science Articles, Homework Help, Discussion**