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Saturday, 31 October

JEE Main 2022 · MathsMultiple choiceSingle correctMediumMulti-step

JEE Main 30 July 2022, Shift 2, Maths Q75

Question 75 of 90 in this shift, Maths question 15 of 30, Section A.

If foci of the hyperbola x2a2−y212=1\frac{x^2}{a^2} - \frac{y^2}{12} = 1 and the ellipse x225+y29=1\frac{x^2}{25} + \frac{y^2}{9} = 1 coincide, then the eccentricity of the hyperbola, with foci (0,±10)\left(0, \pm\sqrt{10}\right) passing through the point (a,a+1)(a, a+1), is
  1. (1)2
  2. (2)2\sqrt{2}Official answer
  3. (3)35\frac{3}{\sqrt{5}}
  4. (4)52\sqrt{\frac{5}{2}}

Official answer

Option 2

NTA final key.

Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.