JEE Main · Physics · Ray Optics and Optical Instruments

Lens and Curved Mirror Coincidence

JEE Main asked Lens and Curved Mirror Coincidence once in the 108 shifts Lumi analysed, on 26 Aug 2021, Shift 2. It belongs to Lens Maker's Formula, in Ray Optics and Optical Instruments (Physics).

Updated 2026-10-24

Times asked: 1; in 1 shift
Years: 1 of 8
First asked: 2021; the only year
Pattern: Gone quiet; asked once so far

Questions on this idea a shift, by year

2017–2026. Asked in 2021. 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: 0 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.

20260 of 9
20250 of 8
20240 of 18
20230 of 12
20220 of 24
20211 of 24
20200 of 12
20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Numerical value is the usual form. Skill tested: multi-step.

Lens-mirror coincidence then lens image distance

Difficulty

Easy 0Medium 0Hard 1

1 of the 1 question had a numerical answer.

Every question

The question

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

26 Aug 2021, Shift 2 · Q27An object is placed at a distance of 12 cm from a convex lens. A convex mirror of focal length 15 cm is placed on other side of lens at 8…HardNumerical valueHas a figure

Shift: 26 Aug 2021, Shift 2.

Same topic

Other ideas in Lens Maker's Formula

Lens Maker's Formula has 16 ideas JEE Main has asked; 9 of them came up in more than one question. The 12 most asked are below.

Topic analysis Chapter analysis Study this chapter All repeated ideas