NEET Physics Optical Instruments MCQ Question
Which combination of statements about optical instruments is correct?
Optical instruments use lenses or mirrors to form images, and the image formed can be real or virtual.
The focal length of a concave mirror is always positive, regardless of the object position.
In a simple microscope, the image formed is always virtual and upright.
The magnification of a lens can be less than one, indicating a smaller image than the object.
Correct Answer
Detailed Explanation
Statement A is correct as optical instruments do utilize lenses or mirrors and can produce both real and virtual images. Statement B is incorrect since the focal length of a concave mirror is considered negative. Statement C is true, but does not encompass all image types in all optical instruments. Statement D is misleading as magnification less than one does indicate a smaller image, but doesn't specify that this is not universally applicable to all image formats.
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