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

Punjab PMETPunjab PMET 2006Ray Optics and Optical Instruments

Solution:

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