(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The moon is observed using a telescope that has an objective lens with a focal length of 3.0 m and an eyepiece with a focal length of 7.5 cm. What is the angular diameter of the moon if the earth-moon distance is 3.85 × 108 m and the diameter of the moon is 3.48 × 106 m?

(a) 0.36 rad (c) 9.0 rad (e) 40 rad

(b) 4.7 rad (d) 22 rad

2. Relevant equations

0 = ho / do

3. The attempt at a solution

0 : the angular size.

ho: the high of the object

do: the distance of the object

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# Homework Help: About Lenses

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