JEE Math Practice Question
If the two lines x + (a – 1) y = 1 and 2x + a2y = 1 (a$$ \in $$R – {0, 1}) are perpendicular, then the distance of their point of intersection from the origin is :
- A.$${2 \over \sqrt5}$$
- B.$${\sqrt2 \over 5}$$
- C.$${2 \over 5}$$
- D.$$\sqrt{2 \over 5}$$
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