NEET UG 2017 · Physics · Question 14
NEET 2017 Physics, question 14
Question 14 of the NEET 2017 paper (code A) is a Physics question from Wave Optics. Its idea, Position of nth Fringe, was asked only this once in NEET 2017–2026. The CBSE official answer key gives option 4.
Updated 2026-10-08
Q14 · Physics
Young's double slit experiment is first performed in air and then in a medium other than air. It is found that 8th bright fringe in the medium lies where 5th dark fringe lies in air. The refractive index of the medium is nearly :
- 11.25
- 21.59
- 31.69
- 41.78Official answer
Official answer: option 4 · CBSE official answer key
Same idea
The only question on Position of nth Fringe
No other NEET paper from 2017–2026 tested this exact idea.
Position of nth Fringe: 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. Young's Double Slit alone had 7.