A beam of light with a wavelength 680 nm in air travels in water. The index of r

Question

A beam of light with a wavelength 680 nm in air travels in water.
The index of refraction of water is 1.33. What is the wavelength in water? Answer in units of nm


012 (part 2 of 2) 10.0 points
Does a swimmer underwater observe the same color or a different color for this light?
1. A swimmer underwater observes a the same color because the wavelength does not change.
2. A swimmer underwater observes a differ- ent color because the frequency changes.
3. It is not possible to know what a swimmer underwater will observe.
4. A swimmer underwater observes the same color because the frequency does not change.
5. A swimmer underwater observes a differ- ent color because the wavelength changes.

Explanation / Answer

680/1.33 =511.27 nm option 5

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