B, Figure A into an orthogonal magnified virtual image, the object distance is less than the focal length; Figure B into an inverted magnified real image, the object distance is greater than double the focal length is less than two times the focal length, does not meet the meaning of the question;
C, Figure A into an imaginary image, the object distance is small, the image becomes smaller; B into a solid image, the object distance becomes larger, the image becomes smaller, in line with the meaning of the question;
D, A figure in the imaging law can be applied to the magnifying glass; B figure in the imaging law can be applied to the projector, does not meet the meaning of the question;
The choice of C.
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