Question

28)Which of the following statements is true-
1 point
A convex lens has 4 diopter power having a focal length 0.25 cm
A convex lens has -4 diopter power having a focal length 0.25 cm
A concave lens has 4 diopter power having a focal length 0.25 m
A concave lens has- 4 diopter power having a focal length 0.25 m​

Answer 1

Answer:

1. a convex lens has y diopter power having a focal length 0.25 cm

Explanation:

the power of a convex lens is positive hand focal length of a convex lens is also positive