Question

in an experiment with a rectangular glass slab, a student observed that a ray of light incident at an angle of 50 degree with the normal on one face of the slab, after reflection strikes the opposite face of the slab before emerging out into air making an angle of 40 degree with the normal. draw a labelled digram to show the path of this ray. what value should you assign to the angle of refraction and and angle of emergence
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Answer 1

Answer:

Angle of incidence = 55°