NEET UG 2022 · Physics · Question 29
NEET 2022 Physics, question 29
Question 29 of the NEET 2022 paper (code R1) is a Physics question from Ray Optics and Optical Instruments. Its idea, Optical Power Calculation, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 4.
Updated 2026-10-08
Q29 · Physics
A biconvex lens has radii of curvature, 20 cm each. If the refractive index of the material of the lens is 1.5, the power of the lens is :
- 1infinity
- 2+2D
- 3+20 D
- 4+5DOfficial answer
Official answer: option 4 · NTA final answer key
Same idea
The only question on Optical Power Calculation
No other NEET paper from 2017–2026 tested this exact idea.
Optical Power Calculation: every question and how it was framed
The chapter
Ray Optics and Optical Instruments in ten years of NEET
26 questions from 2017–2026, asked in 10 of 10 papers, about 2.5 a paper. Thin Lens Formula alone had 9.