JEE Main 2025 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 2 April 2025, Shift 2, Physics Q36

Question 36 of 75 in this shift, Physics question 11 of 25, Section A.

Two identical objects are placed in front of convex mirror and concave mirror having same radii of curvature of 12 cm, at same distance of 18 cm from the respective mirrors. The ratio of sizes of the images formed by convex mirror and by concave mirror is :

(1) $3$
(2) $1/2$ Official answer
(3) $2$
(4) $1/3$

Official answer

Option 2

NTA final key.

Chapter: Ray Optics and Optical Instruments
Topic: Spherical Mirrors
Idea tested: Linear Magnification

Same idea in other shifts

Asked 3× in all

29 Jan 2024, Shift 1 · Q49A convex mirror of radius of curvature 30 cm forms an image that is half the size of the object. The object distance is :EasySingle correct
26 Feb 2021, Shift 1 · Q16A short straight object of height 100 cm lies before the central axis of a spherical mirror whose focal length has absolute value $|f|=40$ …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.