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

यदि रेखाओं \(\frac{x-2}{1}=\frac{y-1}{2}=\frac{z+3}{-3}\) और \(\frac{x+1}{2}=\frac{y+3}{4}=\frac{z+5}{-5}\) के बीच की न्यूनतम दूरी का वर्ग \(\frac{\mathrm{m}}{\mathrm{n}}\) है, जहाँ \(\mathrm{m}, \mathrm{n}\) सह-अभाज्य संख्याएँ हैं, तो \(\mathrm{m}+\mathrm{n}\) = ___

  1. A 21
  2. B 9
  3. C 14
  4. D 6
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Correct Answer

(B) 9

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\begin{aligned} & \overrightarrow{\mathrm{a}}=(2,1,-3) \\ & \overrightarrow{\mathrm{b}}=(-1,-3,-5) \\ & \overrightarrow{\mathrm{p}} \times \overrightarrow{\mathrm{q}}=\left|\begin{array}{ccc}\hat{\mathrm{i}} & \hat{\mathrm{j}} & \hat{\mathrm{k}} \\ 1 & 2 & -3 \\ 2 & 4 &…

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