Question

state the condition under which alarge magnification can be achieved in an astronomical telescope.​

Answer 1

Hello Friend...☺

By using combination two or more concave or convex lens a large magnification can be achieved in an astronomical telescope.

Answer 2

Answer:Magnifying power of an astronomical telescope is given by

M=−(f0(1+fe/d))/fe

∴ Two conditions for large magnification are ,

(i) focal length of objective lens f0 should be large

(ii) focal length of eye lens fe should be small.

Hope this helps .