A ray of red light for which n154 and a ray of violet light, Ask an Expert

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A ray of red light, for which n=1.54 and a ray of violet light, for which n=1.59, travel during a piece of glass. They meet right at the boundary among the glass and the air, and emerge into the air as one ray with an angle of refraction of 22.5?.

What is the angle among the two rays in the glass?

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