Question

Two light waves are initially in phase and have the same wavelength, 470 nm. They enter two different media of identical lengths of 2.50 m. If n1= 1.2 and n2= 1.5, what is the effective phase difference of the waves when they exit the media?

A) 0 rad
B) 0.6 rad
C) 1.6 rad
D) 3.7 rad
E) 10 rad

Answer

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