USAAAO 2015, I кръг — Задача 5
USAAAO First Round 2015
Условие
A telescope with focal length of 20 mm and aperture of 10 mm is connected to your smartphone, which has a CCD that measures 4.0mm by 4.0mm. The CCD is 1024 by 1024 pixels. Which is closest to the field of view of the telescope?
a. 1º
b. 5º
c. 10º
d. 15º
e. 20º
Отговори
- c
Решение
Answer: c
Оригинал в Архива: 2015-first-round-exam.pdf · официални решения: 2015-first-round-solutions.pdf