1.

14.Two lenses one of focal length 20 cm (Convex lens) and another of focal length -15 cm (concave lens) are placed in contact.Find the power of combination of lens.

Answer» 14.Two lenses one of focal length 20 cm (Convex lens) and another of focal length -15 cm (concave lens) are placed in contact.Find the power of combination of lens.


Discussion

No Comment Found