Draw a labelled ray diagram showing the course of rays in an astronomical telescope,when the final image is formed at least distance of distinct vision. Write mathematical expression for its magnifying power.By increasing the diameter of the objective of telescope, we can increase its range,why?

Asked by Topperlearning User | 11th Jun, 2014, 10:50: AM

Expert Answer:

A bigger objective will gather more light .Hence even far off stars may produce images of optimum brightness i.e. its range would increase.

Answered by  | 11th Jun, 2014, 12:50: PM