JEE Main Physics · Ray Optics and Optical Instruments

Optical Instruments in JEE Main

Name: Optical Instruments: JEE Main previous year questions
Creator: Lumi

Optical Instruments (Physics, Ray Optics and Optical Instruments) came 7 times in 6 of the 42 JEE Main shifts Lumi analysed, across 7 distinct ideas. 2 of them came in 2024–26; it was last asked in 2026.

Questions: 7; in 6 shifts
Ideas asked: 7; 0 asked more than once
Numerical answer: 0; 0% of its questions
Pattern: Frequent; last asked 2026

Questions each year

In the shifts Lumi analysed for each year.

Difficulty and format

Easy 5Medium 1Hard 1

Format

Single correct7 Q

Ideas inside the topic

7 ideas

Microscope Tube Length1 Q
Astigmatism and Cylindrical Lenses1 Q
Hypermetropia Correction1 Q
Resolving Power1 Q
Simple Microscope Magnification1 Q
Telescope Tube Length1 Q
Astronomical Telescope Magnification1 Q

Where it sits

Part of Ray Optics and Optical Instruments, which had 66 questions in all. Optical Instruments accounts for 11% of them. In Lumi's JEE taxonomy it belongs to Optics.

Some questions sit in other chapters too: Wave Optics.

Every question

All 7 Optical Instruments questions

Newest first, each with its options and official answer.

4 Apr 2026, Shift 1 · Q44A telescope with objective diameter $R$ is used to observe a distant star emitting light of wavelength $500$ nm, at a resolution of…EasySingle correct
5 Apr 2026, Shift 1 · Q42A compound microscope is designed with two symmetric biconvex lenses. The objective lens is cut vertically, creating two identical…HardSingle correct
28 Jul 2022, Shift 1 · Q46In normal adjustment, for a refracting telescope, the distance between objective and eye piece is 30 cm. The focal length of the…EasySingle correct
3 Aug 2021, Shift 2 · Q15To view a small object with angular magnification 5, the power of the microscope needed is [The final image is formed at infinity]…EasySingle correct
3 Aug 2021, Shift 2 · Q16If a man having the least distance of distinct vision of 50 cm, what should be the focal length of the spectacles for the man ?EasySingle correct
18 Mar 2021, Shift 1 · Q16Your friend is having eye sight problem. She is not able to see clearly a distant uniform window mesh and it appears to her as non-uniform…MediumSingle correct
8 Jan 2020, Shift 1 · Q16The magnifying power of a telescope with tube length 60 cm is 5. What is the focal length of its eye piece ?EasySingle correct