Q: A diminished image of an object is to be obtained on a screen 1.0 m from it. This can be achieved by placing
(A) a plane mirror
(B) a convex mirror of suitable focal length
(C) a convex lens of focal length less than 0.25 m
(D) a concave lens of suitable focal length.
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Ans: (C)
Sol: As real images can only be formed on the screen , So convex lens and Concave mirror can be used.