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Friday, 9 October

JEE Main 2025 · PhysicsMultiple choiceDiagram basedHardMulti-step

JEE Main 2 April 2025, Shift 1, Physics Q41

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

A slanted object AB is placed on one side of convex lens as shown in the diagram. The image is formed on the opposite side. Angle made by the image with principal axis is :

The figure, in words

Convex lens with principal axis (dashed). Object AB to the left: A on the principal axis 30 cm from the lens, B above A (vertical height 2 cm, horizontal offset 1 cm); angle alpha marked at A between AB and the axis. Lens focal length f = 20 cm.
  1. (1)−α2-\frac{\alpha}{2}
  2. (2)+45∘+45^\circ
  3. (3)−α-\alpha
  4. (4)−45∘-45^\circOfficial answer

Official answer

Option 4

NTA final key.

Chapter
Ray Optics and Optical Instruments
Topic
Lens Maker's Formula
Idea tested
Longitudinal Magnification

Same topic in other shifts

All Lens Maker's Formula questions
  1. 2 Apr 2026, Shift 2 · Q49If sunlight is focused on a paper using convex lens, it starts burning the paper in shortest time when the lens is kept at 30 cm above the…EasyNumerical value
  2. 4 Apr 2026, Shift 2 · Q41A convex lens is made from glass material having refractive index of 1.4 with same radius of curvature on both sides. The ratio of its…EasySingle correct
  3. 5 Apr 2026, Shift 2 · Q40A thin convex lens and a thin concave lens are kept in contact and are co-axial. Which of the following statements is correct for this…EasySingle correct
  4. 5 Apr 2026, Shift 2 · Q41An object ABAB is placed 15 cm on the left of a convex lens PP of focal length 10 cm. Another convex lens QQ is now placed 15 cm right…MediumSingle correct
  5. 8 Apr 2026, Shift 2 · Q30A thin biconvex lens is prepared from the glass (μ=1.5\mu = 1.5) both curved surfaces of which have equal radii of 20 cm each. Left side…MediumSingle correct
  6. 2 Apr 2025, Shift 2 · Q37A bi-convex lens has radius of curvature of both the surfaces same as 1/61/6 cm. If this lens is required to be replaced by another convex…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. 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.