The focal lengths of the objective and of the eye-piece of a compound microscope 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)) (1 + (D)/(f_(e)) ) `

Answer

D