![Focal Length Formula & Examples | How to Calculate Focal Length - Video & Lesson Transcript | Study.com Focal Length Formula & Examples | How to Calculate Focal Length - Video & Lesson Transcript | Study.com](https://study.com/cimages/multimages/16/2diagram_mirror6688182548421281944.png)
Focal Length Formula & Examples | How to Calculate Focal Length - Video & Lesson Transcript | Study.com
![SOLVED: The Yerkes refracting telescope has a 1 m diameter objective lens of focal length 20 m. Assume it is used with an eyepiece of focal length 2.31 cm. Find the angular SOLVED: The Yerkes refracting telescope has a 1 m diameter objective lens of focal length 20 m. Assume it is used with an eyepiece of focal length 2.31 cm. Find the angular](https://cdn.numerade.com/ask_previews/c11dfc55-b147-4f4f-a55c-b301b6121ab3_large.jpg)
SOLVED: The Yerkes refracting telescope has a 1 m diameter objective lens of focal length 20 m. Assume it is used with an eyepiece of focal length 2.31 cm. Find the angular
![Focal length, explained by RP Photonics Encyclopedia; focal distance, dioptric power, curved mirror, lens equation, microscope, photographic objective, focus, beam radius Focal length, explained by RP Photonics Encyclopedia; focal distance, dioptric power, curved mirror, lens equation, microscope, photographic objective, focus, beam radius](https://www.rp-photonics.com/img/focal_length.png)
Focal length, explained by RP Photonics Encyclopedia; focal distance, dioptric power, curved mirror, lens equation, microscope, photographic objective, focus, beam radius
![Focal Length Formula & Examples | How to Calculate Focal Length - Video & Lesson Transcript | Study.com Focal Length Formula & Examples | How to Calculate Focal Length - Video & Lesson Transcript | Study.com](https://study.com/cimages/multimages/16/1curvedmirror8320996962080431235.png)
Focal Length Formula & Examples | How to Calculate Focal Length - Video & Lesson Transcript | Study.com
![A refracting telescope has an objective of focal length 1 m and an eye piece of focal length 20 cm. The final image of the sun 10 cm in diameter is formed A refracting telescope has an objective of focal length 1 m and an eye piece of focal length 20 cm. The final image of the sun 10 cm in diameter is formed](https://d10lpgp6xz60nq.cloudfront.net/ss/web/2570322.jpg)
A refracting telescope has an objective of focal length 1 m and an eye piece of focal length 20 cm. The final image of the sun 10 cm in diameter is formed
![Emmons_HW5.pdf - 1. A simple, backyard telescope consists of a single, positive lens of 100 mm in diameter and a focal length of 1 m. A large-format CCD | Course Hero Emmons_HW5.pdf - 1. A simple, backyard telescope consists of a single, positive lens of 100 mm in diameter and a focal length of 1 m. A large-format CCD | Course Hero](https://www.coursehero.com/thumb/32/cd/32cd3b7f6a26c6006197efd297601007b6331850_180.jpg)
Emmons_HW5.pdf - 1. A simple, backyard telescope consists of a single, positive lens of 100 mm in diameter and a focal length of 1 m. A large-format CCD | Course Hero
![A telescope has an objective lens of focal length `200cm` and an eye piece with focal leng - YouTube A telescope has an objective lens of focal length `200cm` and an eye piece with focal leng - YouTube](https://i.ytimg.com/vi/Yhk7LQAnABw/maxresdefault.jpg)