Question

Draw a course of rays in case of astronomial refracting telescope when (i) final image at distance of distinct vision (ii) final image at infinity. Obtain expression for magnifying power in each case.
Or
With the help of a Ray diagram, explain the working of a refracting type astronomical telescope and find an expression for its magnifying power, when the final image is formed at infinity. What do you mean by resolving power of a telescope ?

Answer 1

so this is the diagram of a ray.