Q. Define power of a lens. What is its unit? One student uses a lens of focal length 50 cm and another of - Brainly.in
Optical power - Wikipedia
Definition of diopter-The power of a lens of focal length 1 m in vacuum i..
Lenses 2. CALCULATIONS USING THE LENS FORMULA Calculate the distance of the image to the converging lens in the following situations object distance /cmFocal. - ppt download
write about the power of lens with diagram - Brainly.in