Question

(c) Four convex lenses with a focus distance of 3, 4, 25 and 100 cm. What lens will be used for the objective and eyeglass of the astro-
mical telescope achieve maximum magnification ?
​

Answer 1

Answer:

m=

f

e

f

0

so f

0

=100, f

e

=0.3cm

for getting maximum magnification.