Question

what is the lens. ??​

Answer 1

Answer:

1a : a piece of transparent material (such as glass) that has two opposite regular surfaces either both curved or one curved and the other plane and that is used either singly or combined in an optical instrument for forming an image by focusing rays of light. b : a combination of two or more simple lenses.

Explanation:

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Answer 2

Answer:

lens, in optics, piece of glass or other transparent substance that is used to form an image of an object by focusing rays of light from the object.