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

यदि रेखा \(\overrightarrow{ r }=(-\hat{ i }+3 k )+\lambda(\hat{ i }- a \hat{ j })\) तथा \(\overrightarrow{ r }=(-\hat{ j }+2 k )+\mu(\hat{ i }-\hat{ j }+ k )\) के मध्य न्यूनतम दूरी \(\sqrt{\frac{2}{3}}\) है, तो \(a\) का पूर्णांक मान है

  1. A \(5\)
  2. B \(2\)
  3. C \(3\)
  4. D \(7\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(5\)

Step-by-step Solution

Detailed explanation

\(a_{1}=(-1,0,3)\) \(a_{2}=(0,-1,2)\) \(b_{1}=(1,-a, 0)\) dr's of line (\(1\)) \(b_{2}=(1,-1,1)\) dr's of line \((2)\) \(\overline{ a }_{2}-\overline{ a }_{1}=(1,-1,-1)\)…
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