研究所、轉學考(插大)◆普通物理學題庫下載題庫

(11)An astronomical telescope has an objective of 60-cm focal length as shown in the right figure. The eyepiece has a focal length of 4.5 cm. How far must these lenses be separated when viewing an object 300 cm away from the objective?
(A)72.5 cm
(B)76.0 cm
(C)79.5 cm
(D)83.0 cm
(E)86.5 cm