write about magnifying lens?
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A magnifying glass (called a hand lens in laboratory contexts) is a convex lens that is used to produce a magnified image of an object. A magnifying glass can be used to focus light, such as to concentrate the sun's radiation to create a hot spot at the focus for fire starting.
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A magnifying glass (called a hand lens in laboratory contexts) is a convex lens that is used to produce a magnified image of an object. ... A magnifying glass can be used to focus light, such as to concentrate the sun's radiation to create a hot spot at the focus for fire starting.
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