JEE Main 2023 · PhysicsNumerical answerNumerical valueMediumMulti-step

JEE Main 12 April 2023, Shift 1, Physics Q59

Question 59 of 90 in this shift, Physics question 29 of 30, Section B.

Two convex lenses of focal length 20 cm each are placed coaxially with a separation of 60 cm between them. The image of the distant object formed by the combination is at _______ cm from the first lens.

Official answer

100

NTA final key.

Chapter: Ray Optics and Optical Instruments
Topic: Lens Maker's Formula
Idea tested: Lenses Separated by a Distance

Same idea in other shifts

Asked 6× in all

5 Apr 2026, Shift 2 · Q41An object $AB$ is placed 15 cm on the left of a convex lens $P$ of focal length 10 cm. Another convex lens $Q$ is now placed 15 cm right…MediumSingle correct
7 Apr 2025, Shift 1 · Q27Two thin convex lenses of focal lengths 30 cm and 10 cm are placed coaxially, 10 cm apart. The power of this combination is:EasySingle correct
8 Apr 2024, Shift 2 · Q45The position of the image formed by the combination of lenses is :MediumDiagram basedHas a figure
27 Aug 2021, Shift 1 · Q17Find the distance of the image from object O, formed by the combination of lenses in the figure :MediumDiagram basedHas a figure
2 Apr 2017 (offline) · Q22A diverging lens with magnitude of focal length 25 cm is placed at a distance of 15 cm from a converging lens of magnitude of focal length…MediumSingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.