The focal lengths of the objective and of the eye-piece of a compound microsope are `f_(0)` and `f_(e)` respectively. If `L` is the tube length and `D`,the least distance of distinct vision, then its angular magnification, when the image is formed at infinity, is

Options

A. `(1-(L)/f_(o))((D)/(f_(e)))`
B. `(1+(L)/f_(o))((D)/(f_(e)))`
C. `(L)/(f_(o))(1+(D)/(f_(e)))`
D. `(L)/(f_(o))((D)/(f_(e)))`

Answer

D