Page 1 - HA-refraction through concave lens
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Objective Questions:


                   1.  What is the lens?
                       a) An image – forming device
                       b) An image – producing device
                       c) An image – reflecting device
                       d) An object – reflecting device
                   2.  The spherical surface of lens results in ________
                       a) having a wide range of focal length
                       b) having a narrow range of focal length
                       c) having a wide range of curvature
                       d) having a narrow range of curvature
                   3.  What are Concave lenses?
                       a) Thicker from the centre than at the edge
                       b) Thinner from the centre than at the edge
                       c) Thicker from both the positions
                       d) Thinner from both the positions
                   4.  Out of the following which one is diverging or negative lens?
                       a) Biconvex
                       b) Plano-convex
                       c) Biconcave
                       d) Positive meniscus


                   Subjective Questions:


               1.Where is concave lens used?
               2.How does a concave lens form an image?
               3.What happens when light passes through a concave lens?
               4.What are examples of concave lenses?
               5.What is concave lens?
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