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Saturday, 31 October

JEE Main 2024 · MathsMultiple choiceSingle correctHardMulti-step

JEE Main 5 April 2024, Shift 2, Maths Q3

Question 3 of 90 in this shift, Maths question 3 of 30, Section A.

Let S1={z∈C:∣z∣≤5}S_1 = \{z \in C : |z| \leq 5\}, S2={z∈C:Im(z+1−3i1−3i)≥0}S_2 = \left\{z \in C : \mathrm{Im}\left(\frac{z+1-\sqrt{3}i}{1-\sqrt{3}i}\right) \geq 0\right\} and S3={z∈C:Re(z)≥0}S_3 = \{z \in C : \mathrm{Re}(z) \geq 0\}. Then the area of the region S1∩S2∩S3S_1 \cap S_2 \cap S_3 is :
  1. (1)125π24\frac{125\pi}{24}
  2. (2)125π4\frac{125\pi}{4}
  3. (3)125π6\frac{125\pi}{6}
  4. (4)125π12\frac{125\pi}{12}Official answer

Official answer

Option 4

NTA final key.

  1. 2 Apr 2026, Shift 2 · Q2Let the circles C1:∣z∣=rC_1: |z| = r and C2:∣z−3−4i∣=5,z∈CeC_2: |z - 3 - 4i| = 5, z \in \mathbb{C}_e be such that C2C_2 lies within C1C_1. If z1z_1 moves on…MediumSingle correct
  2. 4 Apr 2026, Shift 1 · Q3Let zz be a complex number such that ∣z+2∣=∣z−2∣|z+2|=|z-2| and arg⁡(z+3z−i)=π4\arg\left(\frac{z+3}{z-i}\right)=\frac{\pi}{4}. Then ∣z∣2|z|^2 is equal to:MediumSingle correct
  3. 2 Apr 2025, Shift 1 · Q2Let zz be a complex number such that ∣z∣=1|z|=1. If 2+k2zk+zˉ=kz\frac{2+k^2z}{k+\bar{z}}=kz, k∈Rk\in\mathbf{R}, then the maximum distance of k+ik2k+ik^2…HardSingle correct
  4. 7 Apr 2025, Shift 1 · Q2Among the statements (S1) : The set {z∈C−{−i}:∣z∣=1\{z \in \mathbb{C} - \{-i\} : |z| = 1 and z−iz+i\frac{z-i}{z+i} is purely real}\} contains exactly two…MediumTwo statements
  5. 4 Apr 2024, Shift 1 · Q2Let α\alpha and β\beta be the sum and the product of all the non-zero solutions of the equation (zˉ)2+∣z∣=0(\bar{z})^2+|z|=0, z∈Cz \in C. Then…MediumSingle correct
  6. 5 Apr 2024, Shift 1 · Q2Consider the following two statements : Statement I : For any two non-zero complex numbers z1,z2z_1, z_2,…HardTwo statements

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.