Solved

A Telescope Has an Aperture of 20

Question 3

Multiple Choice

A telescope has an aperture of 20.3 cm.How far apart must two blue stars (wavelength = 490 nm) be if they are 65 light years away (1 ly = 9.46 * 1015m) in order for the telescope to be able to resolve the two stars?


A) 1.81 * 1012m
B) 1.48 * 1012m
C) 2.79 * 1010m
D) 2.28 * 1010m

Correct Answer:

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