Q70.If a hyperbola has length of its conjugate axis equal to 5 and the distance between its foci is 13 , then the eccentricity of the hyperbola is: (1) 13 (2) 2 12 (3) 13 (4) 13 6 8
What This Question Tests
This question directly applies the formulas for the length of the conjugate axis and the distance between foci of a hyperbola to calculate its eccentricity.
Concepts Tested
Formulas Used
Length of conjugate axis = 2b
Distance between foci = 2ae
b² = a²(e²-1)
📚 NCERT Sections This Tests
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?
9.19 — A Screen Is Placed 90Cm From An Object. The Image Of The Object On
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9.19 A screen is placed 90cm from an object. The image of the object on the screen is formed by a convex lens at two different locations separated by 20cm. Determine the focal length of the lens.
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9.7 Double-convex lenses are to be manufactured from a glass of refractive index 1.55, with both faces of the same radius of curvature. What is the radius of curvature required if the focal length is to be 20cm?
📋 Question Details
- Chapter
- Hyperbola
- Topic
- Properties and eccentricity of hyperbola
- Year
- 2019
- Shift
- 11 Jan Shift 2
- Q Number
- Q70
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 11: Conic Sections
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