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

यदि बिन्दु \(A (-1,4,3)\) से समतल \(P : 2 x + my +\) \(nz =4\), पर लंब का पाद \(\left(-2, \frac{7}{2}, \frac{3}{2}\right)\) है, तो दिक् अनुपात \(3,-1,-4\) की एक रेखा के समांतर नापी गई बिन्दु \(A\) की समतल \(P\) से दूरी बराबर है:

  1. A \(1\)
  2. B \(\sqrt{26}\)
  3. C \(2 \sqrt{2}\)
  4. D \(\sqrt{14}\)
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Answer & Solution

Correct Answer

(B) \(\sqrt{26}\)

Step-by-step Solution

Detailed explanation

Let \(B\) be foot of \(\perp\) coordinates of \(B =\left(-2, \frac{7}{2}, \frac{3}{2}\right)\) Direction ratio of line \(AB\) is \(<2,1,3>\) so \(m=1, n=3\) So equation of \(AC\) is \(\frac{x+1}{3}=\frac{y-4}{-1}=\frac{z-3}{-4}=\lambda\) So point \(C\) is…
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