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Friday, 9 October

JEE Main 2025 · MathsNumerical answerNumerical valueHardMulti-step

JEE Main 8 April 2025, Shift 2, Maths Q23

Question 23 of 75 in this shift, Maths question 23 of 25, Section B.

Let rr be the radius of the circle, which touches xx-axis at point (a,0)(a, 0), a<0a < 0 and the parabola y2=9xy^2 = 9x at the point (4,6)(4, 6). Then rr is equal to __________

Official answer

30

NTA final key.

Topic
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Idea tested
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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 42 of the 174 JEE Main shifts held from 2017 to 2026.