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

यदि एक बिंदु \(R (4, y , z )\) बिंदुओं \(P (2,-3,4)\) तथा \(Q (8,0,10)\) को मिलाने वाले रेखाखण्ड पर स्थित है, तो \(R\) की मूलबिंदु से दूरी है 

  1. A \(\sqrt {53}\)
  2. B \(6\)
  3. C \(2\sqrt {14}\)
  4. D \(2\sqrt {21}\)
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Correct Answer

(C) \(2\sqrt {14}\)

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Detailed explanation

\(\text { Equation of } \mathrm{PQ} \text { is } \frac{x-2}{6}=\frac{y+3}{3}=\frac{z-4}{6}\) \(\mathrm{R}(4, \mathrm{y}, \mathrm{z}) \text { lies on this }\) \(\Rightarrow \frac{1}{3}=\frac{y+3}{3}=\frac{z-4}{6}\) \(\Rightarrow \mathrm{R}(4,-2,6)\)…
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