2020 · Q102
A luminous object is placed at a distance of 40 cm from a converging lens of focal length 25 cm. The image obtained in the screen is
General KnowledgePhysics
- Aerect and magnified
- Berect and smaller
- Cinverted and magnified
- Dinverted and smaller
Explanation
For a converging lens with focal length 25 cm and the object at 40 cm (beyond f but within 2f), the image forms beyond 2f on the other side: using 1/v equals 1/25 minus 1/40 gives v about 66.7 cm. The image is real, inverted, and magnified (magnification about 1.67). The correct description is real, inverted and enlarged.