Q65.Let E1 : x2a2 + y2b2 and the foci of E2 are the end points of minor axis of E1. If E1 and E2 have same eccentricities, then its value is: (1) −1+√5 (2) −1+√8 2 2 (3) −1+√3 (4) −1+√6 2 2
What This Question Tests
This question requires applying the definitions and properties of an ellipse, specifically related to its eccentricity, foci, and major/minor axes, for two related ellipses.
Concepts Tested
Formulas Used
b^2 = a^2(1 - e^2)
Coordinates of foci/endpoints of axes
📚 NCERT Sections This Tests
9.15 — Apply Mirror Equation And The Condition:
Physics Class 12 · Chapter 9
9.15 Apply mirror equation and the condition: (a) f < 0 (concave mirror); u < 0 (object on left) (b) f > 0; u < 0 (c) f > 0 (convex mirror) and u < 0 (d) f < 0 (concave mirror); f < u < 0 to deduce the desired result.
9.8 — A Beam Of Light Converges At A Point P. Now A Lens Is Placed In The
Physics Class 12 · Chapter 9
9.8 A beam of light converges at a point P. Now a lens is placed in the path of the convergent beam 12cm from P. At what point does the beam converge if the lens is (a) a convex lens of focal length 20cm, and (b) a concave lens of focal length 16cm?
2.1 — Two Charges 5 × 10–8 C And –3 × 10–8 C Are Located 16 Cm Apart. At
Physics Class 11 · Chapter 2
2.1 Two charges 5 × 10–8 C and –3 × 10–8 C are located 16 cm apart. At what point(s) on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero.
📋 Question Details
- Chapter
- Ellipse
- Topic
- Properties of ellipse, eccentricity
- Year
- 2021
- Shift
- 22 Jul Shift 1
- Q Number
- Q65
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 11: Conic Sections
More from this Chapter
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