The telescope objective has a diameter of 20 cm and a focal length of 1 m. What is the maximum focal length that makes
| September 15, 2020 | Education
The telescope objective has a diameter of 20 cm and a focal length of 1 m. What is the maximum focal length that makes sense to use the eyepiece when observing with this telescope?
3 cm. With a larger focal length of the eyepiece, some of the light collected by the lens will not enter the observer’s eye.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.