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Q.

Which of the following would you prefer to use while reading small letters found in a dictionary?


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a

A convex lens

b

A convex mirror

c

A concave lens

d

Either (1) or (2) 

answer is A.

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Detailed Solution

A convex lens is preferred to use while reading small letters found in a dictionary.
A convex lens is also used as a simple microscope as it gives a magnified image of an object when placed between the curvature radius and focal length. Also, magnification is more for a convex lens when the object is placed between the optic centre and the focus of the mirror. Thus, we use a convex lens while reading small letters in a dictionary.
 
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