In the figure, a ray of light is perpendicular to the face ab of a prism (n = 1.43). Find the largest value for the angle ø so that the ray is totally reflected at face ac if the prism is immersed (a) in air and (b) in water (n=1.33). (a) Number 44.83 Units ° (degrees) (b) Number i 79.6 Units ° (degrees)
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