Medium MCQ +4 / -1 PYQ · JEE Mains 2020

The plane which bisects the line joining, the points (4, –2, 3) and (2, 4, –1) at right angles also passes through the point :

  1. A (4, 0, 1)
  2. B (0, –1, 1)
  3. C (0, 1, –1)
  4. D (4, 0, –1) Correct answer

Solution

Direction ratios of normal to plane are &lt; 2, –6, 4 &gt; <br><br> Also plane passes through (3, 1, 1) <br><br>$\therefore$ Equation of plane <br><br/>2(x–3)–6(y–1)+4(z–1) = 0 <br><br>$\Rightarrow$ x – 3y + 2z = 2 <br><br>By checking all options we can see this equation passes through (4, 0, –1)

About this question

Subject: Mathematics · Chapter: Three Dimensional Geometry · Topic: Direction Cosines and Ratios

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