CBSE Class 12-science Answered
astronomical telesccope with full explaination
Asked by singhalakash8958 | 03 Mar, 2019, 22:11: PM
Astronomical Telescope
It consists of two convex lenses called objective and eyepiece. The objective is of large focal length whereas the eyepiece is of short focal length. The distance between the two lenses can be adjusted by adjusting the tube which holds the lens.
The ray diagram showing the principle of the astronomical telescope is given below.



From the ray diagram we know that:
PlC is the focal length of the objective andPlD is the focal length of the eye piece.

Answered by Shiwani Sawant | 03 Mar, 2019, 22:37: PM
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