ScienceCLASS 10CBSE
answered 27 Mar 2026Which of the following statements is true? (a) A convex lens has 4 dioptre power having a focal length 0.25 m (b) A convex lens has –4 dioptre power having a focal length 0.25 m (c) A concave lens has 4 dioptre power having a focal length 0.25 m A concave lens has –4 dioptre power having a focal length 0.25 m
A.VERIFIED ANSWERfact-checked by tutors
- Soln:
Answer is (a) A convex lens has 4 dioptre power having a focal length 0.25 m
Explanation:
Positive value for focal length indicates convex lens.