NDA 2026
- Exam
- NDA
- Year
- 2026
- Subject
- Mathematics
- Chapter
- Three Dimensional Geometry
NDA 2026 · Mathematics · Three Dimensional Geometry
Passage: A line L passing through the point (-1,2,-3) is...
Passage: A line passing through the point is perpendicular to the plane given by .
Question: What are the direction ratios of a line parallel to the plane ?
Question: What are the direction ratios of a line parallel to the plane ?
Options
- A
- B
- C
- D
Correct answer
D.
Step-by-step solution
The plane is given by .
The direction ratios of the normal to the plane are .
Since the line is parallel to the plane , its direction vector must be perpendicular to the normal vector of the plane.
Let the direction ratios of the line be .
Then, .
Checking the given options:
For ,
For ,
For ,
For ,
Thus, the direction ratios of the line can be .
Answer:
The direction ratios of the normal to the plane are .
Since the line is parallel to the plane , its direction vector must be perpendicular to the normal vector of the plane.
Let the direction ratios of the line be .
Then, .
Checking the given options:
For ,
For ,
For ,
For ,
Thus, the direction ratios of the line can be .
Answer: