Question

difference between
lens and mirror
For class 7 NCERT

Answer 1

lens is a piece of glass which we can look from both the side and it is transparent but a mirror is one side painted so it can be looked from one side only and it will show the erect and same sized image of the object kept in front of it

Answer 2

Lenses have two focal points, one on either side of the lens. A concave mirror converges light to a focal point. For lenses, light converges to a point for a convex lens. A convex mirror diverges light, as does a concave lens.

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