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

જો \((a, b, c)\) એ બિંદુ \((1,2,-3)\) નું પ્રતિબિંબ રેખા \(\frac{x+1}{2}=\frac{y-3}{-2}=\frac{z}{-1}\) પર હોય તો  \(a+b+c\) ની કિમત શોધો 

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

Answer & Solution

Correct Answer

(B) \(2\)

Step-by-step Solution

Detailed explanation

Line is \(\frac{x+1}{2}=\frac{y-3}{-2}=\frac{z}{-1}=\lambda:\) Let point \(R\) is \((2 \lambda-1,-2 \lambda+3,-\lambda)\) Direction ratio of \(PQ \equiv(2 \lambda-2,-2 \lambda+1,3-\lambda)\) \(PQ\) is \(\perp\) to line…
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