JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyApplication

JEE Main 31 January 2024, Shift 2, Physics Q45

Question 45 of 90 in this shift, Physics question 15 of 30, Section A.

When unpolarized light is incident at an angle of

60^\circ

on a transparent medium from air, the reflected ray is completely polarized. The angle of refraction in the medium is:

(1) $30^\circ$ Official answer
(2) $60^\circ$
(3) $45^\circ$
(4) $90^\circ$

Official answer

Option 1

NTA final key.

Chapter: Wave Optics
Topic: Polarization
Idea tested: Brewster's Angle

Same topic in other shifts

All Polarization questions

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
4 Apr 2026, Shift 2 · Q42An unpolarized light of certain intensity passes through a combination of two polarizers whose transmission axes are at $30^\circ$ and…MediumSingle correct
6 Apr 2026, Shift 1 · Q47An unpolarized light of intensity $I_0$ passes through polarizer and then through a certain optically active solution and finally it goes…MediumNumerical value
4 Apr 2025, Shift 2 · Q40Two polarisers $P_1$ and $P_2$ are placed in such a way that the intensity of the transmitted light will be zero. A third polariser $P_3$ …MediumSingle correct
30 Jan 2024, Shift 2 · Q45A beam of unpolarised light of intensity $I_o$ is passed through a polaroid $A$ and then through another polaroid $B$ which is oriented so…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.