NEET UG 2017 · Physics · Question 37
NEET 2017 Physics, question 37
Question 37 of the NEET 2017 paper (code A) is a Physics question from Wave Optics. Its idea, Polarisation and Malus's Law, was asked 6 times, in 2017, 2018, 2020, 2024 and 2025, across NEET 2017–2026. The CBSE official answer key gives option 3.
Updated 2026-10-08
Q37 · Physics
Two Polaroids and are placed with their axis perpendicular to each other. Unpolarised light is incident on . A third polaroid is kept in between and such that its axis makes an angle 45° with that of . The intensity of transmitted light through is
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Official answer: option 3 · CBSE official answer key
Same idea
Polarisation and Malus's Law, in other papers
NEET asked this idea 6 times, in 2017, 2018, 2020, 2024 and 2025. The other 5 questions below.
- 2025 Q27An unpolarized light beam travelling in air is incident on a medium of refractive index 1.73 at Brewster's angle. Then-One-line MCQ · Easy
- 2025 Q43The intensity of transmitted light when a polaroid sheet, placed between two crossed polaroids at 22.5° from the polarization axis of one…Numerical · Medium
- 2024 Q2An unpolarised light beam strikes a glass surface at Brewster's angle. ThenOne-line MCQ · Easy
- 2020 Q138The Brewsters angle for an interface should be :One-line MCQ · Medium
- 2018 Q8Unpolarised light is incident from air on a plane surface of a material of refractive index ''. At a particular angle of incidence…One-line MCQ · Medium
Polarisation and Malus's Law: every question and how it was framed
The chapter
Wave Optics in ten years of NEET
15 questions from 2017–2026, asked in 8 of 10 papers, about 1.5 a paper. Single Slit Diffraction alone had 8.