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At night, you decide to go for a swim in the apartment complexpool. Your roommat

ID: 1744083 • Letter: A

Question

At night, you decide to go for a swim in the apartment complexpool. Your roommate come to find you. The roommate uses aflashlight and shines it on the pool. You are currently underwaterand decide to apply what you learned in class that morning aboutlight rays.

You roughly estimate that the roommate shines light rays on to thewater at an angle of 50.2°. You knowthat air has an index of refraction of 1.0. The pool contains anunknown liquid. However, you also estimate that the light ray isrefracted at an angle 37.8°. Determinethe index of refraction of the unknown liquid.

Explanation / Answer

Applying Snells law we have as, n1sini=n2sinr 1*sin(90-50.2)=nsin37.8 n=1.044 Hence we get by it.