A simple telescope, consisting of an objective of focal length `60 cm` and a single eye l
Channel: Doubtnut
Date: 19/01/2020

A simple telescope, consisting of an objective of focal length `60 cm` and a single eye lens of focal length `5 cm` is focussed on a distant object is such a way that parallel rays comes out from the eye lens. If the object subtends an angle `2^(@)` at the objective, the angular width of the image.