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                                    A variable chord PQ of the parabola y2=4ax is drawn parallel to line y=x. Then the locus of point of intersection of normals at P and Q is: | 
                            
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Answer»  A variable chord PQ of the parabola y2=4ax is drawn parallel to line y=x. Then the locus of point of intersection of normals at P and Q is:   | 
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