Question

8. The focal length of the objective and eye piece of an astronomical telescope are 25
cm and 2.5 cm respectively. The telescope is focused on an object 1.5 m from
objective, the final image being formed 25 cm from eye of the observer. The length
of the telescope is:
a). 3.227 cm b). 32.27 cm c). 0.03227 m d). 32.227 m
9. A telescope uses an obiective lens of focal length f​

Answer 1

Answer:

$33 {0 \div 6y {7 {3}^{?} }^{?} }^{2}$