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2.8 Exercise 57

Avg difficulty 2.5

Two stars that are 109km10^{9} \text{km} apart are viewed by a telescope and found to be separated by an angle of 10−5radians10^{−5} \text{radians}. If the eyepiece of the telescope has a focal length of 1.5 cm and the objective has a focal length of 3 meters, how far away are the stars from the observer?

OpenStax University Physics Volume 3, 2.8 Microscopes and Telescopes, exercise 57

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Adapted from University Physics Volume 3 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 3. Imported at revision db44eb9.