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

माना समतल \(\mathrm{P}\), बिंदुओं \((5,3,0),(13,3,-2)\) तथा \((1,6,2)\) से होकर जाता है। \(\alpha \in \mathrm{N}\) के लिए यदि बिंदुओं \(\mathrm{A}(3,4, \alpha)\) तथा \(\mathrm{B}(2, \alpha, \mathrm{a})\) की समतल \(\mathrm{P}\) से दूरियाँ क्रमशः \(2\) तथा \(3\) है, तो \(a\) का धनात्मक मान है -

  1. A \(6\)
  2. B \(4\)
  3. C \(3\)
  4. D \(5\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(4\)

Step-by-step Solution

Detailed explanation

\(\left|\begin{array}{ccc}\hat{ i } & \hat{ j } & \hat{ k } \\ 8 & 0 & -2 \\ 4 & -3 & -2\end{array}\right|=\hat{ i }(-6)+8 \hat{ j }-24 \hat{ k }\) Normal of the plane \(=3 \hat{i}-4 \hat{j}+12 \hat{k}\) Plane: \(3 x-4 y+12 z=3\) Distance from \(A (3,4, \alpha)\)…
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