Two different type of lenses( convex and concave) are placed on a sheet of newspaper. How will you identify them without touching? b) A shopkeeper wanted to fix a mirror which will give a maximum view of his shop. What type of mirror should he use? Give reason.
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Explanation:
A. If it is convex lens, then the letters of the newspaper will appear bigger/ larger and if it is concave lens, then the letters of the newspaper will appear smaller.
B. He should use Convex mirror as it can form images of object's spread over a large area.
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