A Ray of Monochromatic Light in Air Falls on the Upper

question 51

Multiple Choice

A ray of monochromatic light in air falls on the upper surface of two parallel-sided slabs of transparent material, as shown in the diagram. The angle of refraction φ in the lower slab is approximately

• A) 22º.
• B) 30º.
• C) 37º.
• D) 53º.
• E) 60º.

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