A compound microscope has a tube length of

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

Problem

16\,\text{cm}

. Its objective and eyepiece have focal lengths

f_o=0.5\,\text{cm}

and

f_e=2.5\,\text{cm}

respectively. What is the maximum magnifying power obtainable with this instrument (final image at the near point,

D=25\,\text{cm}

)? (a)

320

(b)

400

(c)

352

(d)

286