Magnifying glass: virtual image with m = image/object size

Steps:

• Converging lens forms virtual image when object is inside focal length.
• Image appears erect and larger on object side.
• Linear magnification is ratio of image height to object height.
• For magnifying glass, m > 1, confirming virtual enlarged image.

Why C is correct:

• Lens formula and sign convention show virtual image (v negative) for object inside f; magnification m = h_i / h_o from similar triangles.

Why the others are wrong:

• A: Image is virtual, not real (real forms beyond 2f).
• B: Image is virtual, not real; magnification is image/object, not reciprocal.
• D: Magnification is image/object, not reciprocal (reciprocal gives m < 1).

Final answer: C