14. An object 4 cm in size is placed at a distance of 25 cm from a concave mirror of
focal length 15 cm. Find the position, nature and height of the image.
15. Size of image of an object by a mirror having a focal length of 20 cm is observed to
be reduced to 1/ 3rd of its size. At what distance the object has been placed from
the mirror? What is the nature of the image and the mirror?
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