Gujarat BoardEnglish MediumSTD 7ScienceLight2 Marks
Question
What is a lens?
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Answer
A piece of transparent material bound by curved surfaces. There are two types of lens concave lens and convex lens. Convex lens is thick at the centre and thinner at edges, it is called converging lens concave lens is thin at the center and thicker at edge, it is called diverging lens.
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