1.

In the given figure,the angle of reflection is A. `30^(@)`B. `60^(@)`C. `45^(@)`D. None of these

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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