NDA 2021 Physics question

Physics Ray Optics and Optical Instruments NDA 2021

Power of a lens of focal length 25 cm is

(A)+2·5 Dioptre
(B)+3 Dioptre
(C)+4 DioptreCorrect
(D)+5 Dioptre

Answer: (C)

Solution

dioptre.

Question ID VK-031973