Which of the following is not a part of compound microscope ?

Which of the following is not a part of compound microscope ?

Mirror
Stage
Clip
Retina
This question was previously asked in
UPSC NDA-1 – 2024
The correct option is D. The retina is a part of the eye, the organ that perceives the light and forms the image, and is not a component of a compound microscope itself.
A compound microscope is an optical instrument with several components, including the mirror (or light source), stage (for holding the specimen), clips (to hold the slide on the stage), objective lenses, eyepiece, body tube, focus knobs, etc., all working together to magnify an object.
The image formed by the microscope is viewed by the observer through the eyepiece, and this image is ultimately focused onto the retina of the observer’s eye. While the retina is crucial for seeing the magnified image, it is functionally distinct from the microscope’s structure.