A light ray of lambda = 430 nm enters at an angle of incidence of $37.2^circ$ from air into a block of plastic. Its angle of refraction is $21.4^circ$. What is the speed of the light inside the plastic?
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2^\circ)}{\sin(21.4^\circ)} = \frac{0.60181502315}{0.36812455268} = 1.634\] Show more…
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