Concave lens have focus!but how I am not understanding it is not mirror so how will is refract?

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Solution

mirror reflect and lens refract
reflection is process of backing of incident light ray after incident on mirror
refraction is the process of bending light when it moves from one medium to another a lens refract due to enter of light ray from air medium to another glass medium

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Concave lens have focus!but how I am not understanding it is not mirror so how will is refract?

mirror reflect and lens refract reflection is process of backing of incident light ray after incident on mirror refraction is the process of bending light when it moves from one medium to another a lens refract due to enter of light ray from air medium to another glass medium

mirror reflect and lens refract
reflection is process of backing of incident light ray after incident on mirror
refraction is the process of bending light when it moves from one medium to another a lens refract due to enter of light ray from air medium to another glass medium