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Friday, 9 October

JEE Main 2023 · MathsMultiple choiceSingle correctHardMulti-step

JEE Main 13 April 2023, Shift 2, Maths Q2

Question 2 of 90 in this shift, Maths question 2 of 30, Section A.

Let S={z∈C:zˉ=i(z2+Re(zˉ))}S=\{z\in\mathbb{C}: \bar{z}=i(z^2+Re(\bar{z}))\}. Then ∑z∈S∣z∣2\sum_{z\in S}|z|^2 is equal to
  1. (1)52\frac{5}{2}
  2. (2)33
  3. (3)72\frac{7}{2}
  4. (4)44Official answer

Official answer

Option 4

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