Solving a problem in physics section 25 point 3 optics

Solving a problem in physics section 25 point 3 optics

3. Calculate the group and phase velocity of light with a wavelength of 643.8 nm in the water, if it is known that the refractive index for this wavelength equal to 1.3314, while for the wave length of 656.3 nm, it is equal to 1.3311.

Additional information:

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)

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