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July 30, 2015

Homework Help: Physics

Posted by Hanu2012 on Saturday, December 8, 2012 at 1:41pm.

Brain buster: A laser sends red light of wavelength 650 nm from air into water in a swimming pool. The index of refraction of the water is 1.33.
(a) What wavelength will the light have in the
water?
(b) What colour would light of this wavelength appear if it were in air?
(c) Why does a swimmer under the water see the light as red?

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