what are lens.......,
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a piece of glass or other transparent material with curved sides for concentrating or dispersing light rays, used singly (as in a magnifying glass) or with other lenses (as in a telescope).
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hey mate
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besides the glass slab and the prism it is lenses that are used very often for studying and using the effects of refraction eye lens is a portion of a transparent refracting medium bounded by two surfaces
it's your answer
besides the glass slab and the prism it is lenses that are used very often for studying and using the effects of refraction eye lens is a portion of a transparent refracting medium bounded by two surfaces
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