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3D Geometry question

2025 · 4 Apr · Shift 1 · Q40
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  5. /2025 · 4 Apr · Shift 1 · Q40

3D Geometry question

2025 · 4 Apr · Shift 1 · Q40

JEE MainMathematics3D GeometryMCQ+4 / −1
Let AAA and BBB be two distinct points on the line L:x−63=y−72=z−7−2L: \frac{x-6}{3}=\frac{y-7}{2}=\frac{z-7}{-2}L:3x−6​=2y−7​=−2z−7​. Both AAA and BBB are at a distance 2172 \sqrt{17}217​ from the foot of perpendicular drawn from the point (1,2,3)(1,2,3)(1,2,3) on the line LLL. If OOO is the origin, then OA→⋅OB→\overrightarrow{O A} \cdot \overrightarrow{O B}OA⋅OB is equal to
  1. A
    49
  2. B
    21
  3. C
    47
  4. D
    62
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