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A ray of light travelling in air is incident at ` 45^(@)` on a medium of refractive index ` sqrt(2)`. The angle of refractive in the medium isA. ` 45^(@)`B. `60^(@)`C. `30^(@)`D. `70^(@)` |
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Answer» Correct Answer - C `n=(sin i)/(sin r)` `:. sin r =(sin i)/(n)=(sin 45^(@))/( sqrt(2))=(1)/(sqrt(2)sqrt(2))=(1)/2` `:. r=30^(@)` |
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