Question

Define terms [3]
(a) Magnification
(b) Power of a lens
(c) Optical density

Answer 1

Answer:

power of lens is inverse of focal length

magnification=-v/u

and sorry I don't know the last answer

Answer 2

Answer:

(a) Magnification-the action of magnifying something or the process of being magnified.

(b) Power of a lens-Power of lens is the ability of the lens to converge the rays of light falling on it.

(c) Optical density-the degree to which a refractive medium retards transmitted rays of light

Mark me as brainliest .