JEE Advanced 2017Paper 1
- Exam
- JEE Advanced
- Year
- 2017
- Paper
- Paper 1
- Subject
- Mathematics
- Chapter
- Ellipse
JEE Advanced 2017 · Paper 1 · Mathematics · Ellipse
Columns 1, 2 and 3 contain conics, equations of tangents to the...
Columns 1, 2 and 3 contain conics, equations of tangents to the conics and points of contact, respectively.
For , if a tangent is drawn to a suitable conic (Column 1) at the point of contact , then which of the following options is the only Correct combination for obtaining its equation?
| Column 1 | Column 2 | Column 3 |
| (I) | (i) | (P) \left(\dfrac{a}{{m}^{2}}, \dfrac{2a}{m}\right){x}^{2} + {a}^{2}{y}^{2} = {a}^{2}y = mx + a\sqrt{{m}^{2} + 1} |
| (III) | (iii) | (R) \left(\dfrac{- {a}^{2}m}{\sqrt{{a}^{2}{m}^{2} + 1}}, \dfrac{1}{\sqrt{{a}^{2}{m}^{2} + 1}}\right){x}^{2} - {a}^{2}{y}^{2} = {a}^{2}y = mx + \sqrt{{a}^{2}{m}^{2} + 1} |
Options
- A(II) (ii) (Q)
- B(III) (i) (P)
- C(I) (ii) (Q)
- D(I) (i) (P)
Correct answer
C. (I) (ii) (Q)
Step-by-step solution
For and point only I of column-1 satisfies. Hence, equation of tangent is or which matches with (ii) of column 2 and also with Q of column 3