The objective of a compound microscope forms an image which is
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → real and enlarged
The objective of a compound microscope has a short focal length, and the object is placed just beyond its focus (between f and 2f). A convex lens then forms a real, inverted and magnified image on the other side.
This first image lies within the focal length of the eyepiece, which acts as a simple magnifier and forms the final virtual, enlarged image.
Why the other options are incorrect
Option (1) virtual and enlarged — Incorrect. Virtual and enlarged describes the final image formed by the eyepiece, not the image formed by the objective.
Option (2) virtual and diminished — Incorrect. A convex lens never forms a virtual diminished image; only a concave lens does.
Option (4) real and diminished — Incorrect. A real diminished image needs the object beyond 2f, which is not how the objective of a microscope is used.
NCERT (2026-27):
The Microscope – …
