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

અહી \(S\) એ બિંદુ \(Q(1,3,4)\) નું સમતલ \(2 x-y+z+3=0\) ની સાપેક્ષે પ્રતિબિંબ છે અને બિંદુ \(\mathrm{R}(3,5, \gamma)\) એ સમતલ પરનું બિંદુ છે તો રેખાખંડ \(SR\) ની લંબાઈનો વર્ગ મેળવો.

  1. A \(72\)
  2. B \(27\)
  3. C \(36\)
  4. D \(6\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(72\)

Step-by-step Solution

Detailed explanation

Since \(\mathrm{R}\,(3,5, \gamma)\) lies on the plane \(2 \mathrm{x}-\mathrm{y}+\mathrm{z}+3=0\). Therefore, \(6-5+\gamma+3=0\) \(\Rightarrow \gamma=-4\) Now, dr's of line \(QS\) are \(2,-1,1\) equation of line \(Q S\) is…
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