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14/09/2021 7:49 pm
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Which of the following lenses would you prefer to use while reading small letters found in a dictionary?
(a) A convex lens of focal length 50 cm
(b) A concave lens of focal length 50 cm
(c) A convex lens of focal length 5 cm
(d) A concave lens of focal length 5 cm
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14/09/2021 7:51 pm
(c) A convex lens of focal length 5 cm