A plane contains the line , and is perpendicular to the plane . Then which of the following points lies on ?
- (A)
- (B)✓ Correct
- (C)
- (D)
Answer: (B)
Solution
Every plane through the given line belongs to the family
that is .
Perpendicularity to makes the two normals orthogonal:
Substituting and clearing the denominator, is .
Among the given points only satisfies it, since , so passes through .
that is .
Perpendicularity to makes the two normals orthogonal:
Substituting and clearing the denominator, is .
Among the given points only satisfies it, since , so passes through .
JEE Main · 2021 · 26 Aug 2021 · Shift 1 · Single correct option