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Q. Which of the following pairs can produce erect, diminished and virtual image?

AFMCAFMC 2005

Solution:

Concave lens and convex mirror can produces erect, diminished and virtual image. Image formation by a concave lens:
image
$AB$ = object, $A' B'$= image
Image is erect, diminished and virtual.
Image formation by convex mirror:
image
$AB$ = object, $A'B'$ = image
Image is erect, diminished and virtual.