Answer :
c) The point of intersection of L₁ and L₂. The point on L₁ is the point of intersection of L₁ and L₂ due to their perpendicular relationship.
To solve this, note that since L₁ is perpendicular to L₂ and L₂ is perpendicular to both L₁ and L₃, these three lines intersect at a single point, making L₂ perpendicular to both L₁ and L₃ at a common intersection. Therefore, the point which lies on L₁ is:
This is due to the fact that if two lines are perpendicular, they intersect at a point. Here, L₁ and L₂ intersect at one point because they are perpendicular to each other.
