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Figure shows the graph of angle of deviation `del` versus angle of incidence `i` for a light ray striking a prism. The prism angle is A. `30^(@)`B. `45^(@)`C. `60^(@)`D. `75^(@)` |
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Answer» Correct Answer - B `delta=30^(@)` `delta=i+e-A` `30^(@)=75^(@)-A` `:. A=75^(@)-30^(@)=45^(@)` |
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