Question

what is the difference between lenses and mirrors.?​

Answer 1

Mirror :

It has only one surface which reflects light.

It follows the laws of reflection.

Mirror formula is 1 /f = 1 /v +1/u

Lens :

It has two surfaces, which one or both can refract write.

It follows the law of refraction

lens formula is 1/f =1/v - 1/u

Answer 2

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A lens is a transparent device with two curved surfaces, usually made of glass or plastic, that uses refraction to form an image of an object. Mirrors, which have curved surfaces designed to reflect rays, also form images. ... Positive and negative lenses can both form real and virtual images.