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

माना \(P\) एक समतल है जिसमें समतलों \(x + y + z -6\) \(=0\) तथा \(2 x +3 y + z +5=0\) की प्रतिच्छेदन रेखा अंतर्विष्ट है तथा यह \(x y\)-तल के लंबवत है। तो बिन्दु \((0,0,256)\) की \(P\) से दूरी बराबर है 

  1. A \(63\sqrt 5 \)
  2. B \(205\sqrt 5 \)
  3. C \(\frac{{17}}{{\sqrt 5 }}\)
  4. D \(\frac{{11}}{{\sqrt 5 }}\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(\frac{{11}}{{\sqrt 5 }}\)

Step-by-step Solution

Detailed explanation

Equation of plane \(\mathrm{P}_{1}+\lambda \mathrm{P}_{2}=0\) \((x+y+z-6)+\lambda(2 x+3 y+z+5)=0\) \(\Rightarrow x(1+2 \lambda)+y(1+3 \lambda)+2(1+\lambda)-6+5 \lambda=0\) This plane is \(\perp\) to \(x y-\) plane \(\therefore 1+\lambda=0\) So, equation of plane \(-x-2 y-11=0\)…
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