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Straight Lines and Pair of Straight Lines question

2019 · 9 Apr · Shift 2 · Q39
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  5. /2019 · 9 Apr · Shift 2 · Q39

Straight Lines and Pair of Straight Lines question

2019 · 9 Apr · Shift 2 · Q39

JEE MainMathematicsStraight Lines and Pair of Straight LinesMCQ+4 / −1
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 :
  1. A
    25{2 \over \sqrt5}5​2​
  2. B
    25{\sqrt2 \over 5}52​​
  3. C
    25{2 \over 5}52​
  4. D
    25\sqrt{2 \over 5}52​​
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