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JEE Mains · Maths · STD 12 - 11. three dimension geometry

જો રેખા \(\frac{{x - 2}}{3} = \frac{{y + 1}}{2} = \frac{{z - 1}}{1}\) એ સમતલ \(2x + 3y -z + 13 = 0\) ને બિંદુ \(P\) આગળ છેદે છે અને સમતલ \(3x + y + 4z = 16\) ને બિંદુ \(Q\) આગળ છેદે છે તો  \(PQ\) મેળવો.

  1. A \(2\sqrt {14} \)
  2. B \(14\)
  3. C \(2\sqrt {7} \)
  4. D \(\sqrt {14} \)
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Answer & Solution

Correct Answer

(A) \(2\sqrt {14} \)

Step-by-step Solution

Detailed explanation

\(\frac{x-2}{3}=\frac{y+1}{2}=\frac{z-1}{-1}=\lambda\) \(x=3 \lambda+2, y=2 \lambda-1, z=-\lambda+1\) Intersection with plane \(2 x+3 y-z+13=0\) \(2(3 \lambda+2)+3(2 \lambda-1)-(-\lambda+1)+13=0\) \(13 \lambda+13=0\) \(\lambda=-1\) \(\therefore P(-1,-3,2)\) Intersection with…
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