CBSE BoardEnglish MediumSTD 10ScienceLight – Reflection and Refraction2 Marks
Question
Which lens would you prefer to use while reading small letters from a dictionary?
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Answer
A convex lens gives a magnified image of an object when it is placed between the radius of curvature and focal length. Also, magnification is more for convex lenses having shorter focal length. Therefore, for reading small letters, a convex lens of focal length 5cm should be used.
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