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Friday, 9 October

JEE Main 2025 · PhysicsMultiple choiceSingle correctMediumApplication

JEE Main 4 April 2025, Shift 2, Physics Q40

Question 40 of 75 in this shift, Physics question 15 of 25, Section A.

Two polarisers P1P_1 and P2P_2 are placed in such a way that the intensity of the transmitted light will be zero. A third polariser P3P_3 is inserted in between P1P_1 and P2P_2, at particular angle between P2P_2 and P3P_3. The transmitted intensity of the light passing the through all three polarisers is maximum. The angle between the polarisers P2P_2 and P3P_3 is :
  1. (1)π/8\pi/8
  2. (2)π/6\pi/6
  3. (3)π3\frac{\pi}{3}
  4. (4)π4\frac{\pi}{4}Official answer

Official answer

Option 4

NTA final key.

Chapter
Wave Optics
Topic
Polarization
Idea tested
Three-Polarizer System Optimization

Same topic in other shifts

All Polarization questions
  1. 4 Apr 2026, Shift 1 · Q45An unpolarized light is incident on the plane interface of air-dielectric medium shown in figure. If the incident angle is equal to…HardDiagram basedHas a figure
  2. 4 Apr 2026, Shift 2 · Q42An unpolarized light of certain intensity passes through a combination of two polarizers whose transmission axes are at 30∘30^\circ and…MediumSingle correct
  3. 6 Apr 2026, Shift 1 · Q47An unpolarized light of intensity I0I_0 passes through polarizer and then through a certain optically active solution and finally it goes…MediumNumerical value
  4. 30 Jan 2024, Shift 2 · Q45A beam of unpolarised light of intensity IoI_o is passed through a polaroid AA and then through another polaroid BB which is oriented so…EasySingle correct
  5. 31 Jan 2024, Shift 2 · Q45When unpolarized light is incident at an angle of 60∘60^\circ on a transparent medium from air, the reflected ray is completely polarized.…EasySingle correct

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.