JEE Main · Physics · Ray Optics and Optical Instruments
Achromatic Prism Combination
JEE Main asked Achromatic Prism Combination 2 times in 2 of the 108 shifts Lumi analysed, in 2021 and 2022. It belongs to Prism Deviation, in Ray Optics and Optical Instruments (Physics). The longest wait between two years asking it was 1 year.
Updated 2026-10-24
- Times asked
- 2
- in 2 shifts
- Years
- 2 of 8
- First asked
- 2021
- last in 2022
- Pattern
- Occasional
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2021 and 2022. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.
Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.
Shift by shift
Each square is one analysed shift, in date order. Open a filled one for that paper.
How JEE Main framed it
Numerical value is the usual form. Skill tested: calculation.
- Prism angle in achromatic combination
- Net deviation of two-prism combination
Difficulty
2 of the 2 questions had a numerical answer.
Every question
All 2 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 27 Jul 2022, Shift 2 · Q53A thin prism of angle and refractive index for yellow light ()1.5 is combined with another prism of angle…MediumNumerical valueHas a figure
- 16 Mar 2021, Shift 2 · Q29A deviation of is produced in the yellow ray when prism of crown and flint glass are achromatically combined. Taking dispersive…MediumNumerical value
Shifts: 16 Mar 2021, Shift 2, 27 Jul 2022, Shift 2.
Same topic
Other ideas in Prism Deviation
Prism Deviation has 9 ideas JEE Main has asked; 4 of them came up in more than one question.
- Minimum Deviation Condition9× · 2026
- Prism Refractive Index3× · 2026
- TIR at Second Face Condition2× · 2026
- Angular Dispersiononce · 2024
- Liquid-Filled Equilateral Prismonce · 2023
- Grazing Emergence Conditiononce · 2022
- Base Parallel Property at Minimum Deviationonce · 2021
- Prism in Surrounding Mediumonce · 2021