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In the given figure,the angle of reflection is A. `30^(@)`B. `60^(@)`C. `45^(@)`D. None of these |
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Answer» Correct Answer - C Given ,`y =x^(2)` `(dy)/(dx)=2x(1)/(2)=1` `rArr tan theta =1=mrArrtheta=45^(@)` From the figure angle of incidence is `45^(@)` Hence angle of reflection is `45^(@)` |
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