The magnification produced by a concave lens is
If the magnification produced by a lens is -0.5, the correct statement is :
(a) the lens is concave
(b) the image is virtual
(c) the image is magnified
(d) the image is real and diminshed formed by a convex lens
A concave lens has focal length 15 cm. At what distance should the object from the lens should be placed so that it forms an image at 10 cm from the lens? Also find the magnification produced by the lens.