NEET UG · Physics · Ray Optics and Optical Instruments
Combination of Thin Lenses
NEET asked Combination of Thin Lenses twice, in 2023 and 2025: 2 of the 1,875 questions in the 10 papers from 2017–2026. It belongs to Thin Lens Formula, in Ray Optics and Optical Instruments (Physics). The longest wait between two papers asking it was 2 years.
Updated 2026-10-08
- Times asked
- 2
- in 2017–2026
- Papers
- 2
- of 10
- First asked
- 2023
- last in 2025
- Chance next paper
- 6%
- calibrated historical rate
Questions on this idea, by paper
2017–2026. 2023 and 2025.
How NEET framed it
One-line MCQ is the usual form. Skill tested: concept.
- Equivalent focal length of lenses in contact
- Power and magnification of lenses in contact
Chance asked next paper 6%
Every question
All 2 questions
From the official NEET UG papers, newest first. Open one for the full question, the options and the official answer.
- 2025 Q13In a certain camera, a combination of four similar thin convex lenses are arranged axially in contact. Then the power of the combination…One-line MCQ · Easy
- 2023 Q46Two thin lenses are of same focal lengths (), but one is convex and the other one is concave. When they are placed in contact with each…One-line MCQ · Easy
Same topic
Other ideas in Thin Lens Formula
Thin Lens Formula has 7 ideas NEET has asked; 2 of them came up in more than one question.
- Combination of Lenses Separated by a Distance2× · 2026
- Index Correction on the Optical Benchonce · 2026
- Lens Maker's Formulaonce · 2023
- Optical Power Calculationonce · 2022
- Thin Lens Formula Applicationonce · 2021
- Liquid Trapped Between Two Lensesonce · 2019