Which of the following statements is/are true? Mark as favorite Copy Link A concave lens has – 4 dioptre having a focal 0.25 m A concave lens has 4 dioptre power having a focal length 0.25 m A convex lens has 4 dioptre power having a focal length 0.25 m A convex lens has -4 dioptre power having a focal length 0.25 m Check Answer