For a simple magnifier adjusted so that the final image is formed at the least…

PHYSICS · Single correct · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments

Problem

For a simple magnifier adjusted so that the final image is formed at the least distance of distinct vision

D

, which of the following gives its magnifying power

m

in terms of its focal length

f

? (a)

m = 1 + \dfrac{f}{D}

(b)

m = \dfrac{D}{f}

(c)

m = 1 + \dfrac{D}{f}

(d)

m = \dfrac{D}{f} - 1