Assertion (A): A convex lens can produce both real and virtual images depending on the position of the object.
Reason (R): When the object is placed between the optical centre and the principal focus of a convex lens, the image formed is virtual and erect.
Generated by claude-sonnet-4-6 · 2026-06-26 01:12 · grounding rag
Model Answer
Option A is correct. Both A and R are true, and R is the correct explanation of A. When the object is between F₁ and optical centre O, a convex lens forms a virtual, erect, enlarged image — this case directly explains why a convex lens can form virtual images, supporting Assertion A.
Source: Chapter 9, Section 9.3.4 (Table 9.4)
Explanation
- A is true: Table 9.4 confirms a convex lens forms real images (object beyond F₁) AND virtual images (object between F₁ and O).
- R is true: Table 9.4 explicitly states that when the object is between F₁ and O, the image is virtual and erect.
- R correctly explains A: The reason directly gives the specific condition under which a convex lens forms a virtual image, thus explaining why both types of images are possible — making it the correct explanation, not just an additional fact.