meaning of concave lens
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concave lens is a lens that possesses at least one surface that curves inwards. It is a diverging lens, meaning that it spreads out light rays that have been refracted through it. A concave lens is thinner at its centre than at its edges, and is used to correct short-sightedness (myopia).
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» Concave lens definition :-
In which light rays after refraction moves away from one another.
» Image formation :-
The image formed by a Concave lens is always small (diminished) and erect.
» Use
It is used in correctness of Myopia (defect of eye).
» Appearance
It is thinner at the center than edges.
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