Learn

Friday, 9 October

JEE Main 2026 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 6 April 2026, Shift 1, Physics Q41

Question 41 of 75 in this shift, Physics question 16 of 25, Section A.

A spherical interface lens of radius RR separates two media of refractive indices 1 and 1.4 respectively as shown in the figure below. A point source is placed at a distance of 4R4R in front of spherical interface. The magnitude of magnification of point source image is ________.

The figure, in words

Point source P on the axis in medium n1 = 1 at distance 4R from the pole of a spherical refracting surface of radius R, with centre of curvature on the side of medium n2 = 1.4.
  1. (1)1.66Official answer
  2. (2)2.33
  3. (3)2.66
  4. (4)1.33

Official answer

Option 1

NTA final key.

Chapter
Ray Optics and Optical Instruments
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.