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Home Q & A Board Science-Related Homework Help Physics
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doit_the_clown doit_the_clown
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7 years ago
The secondary mirror of a telescope whose primary mirror is 4 meters in diameter has a diameter of 0.5 meters.  What fraction of the incoming light is obstructed by this secondary mirror?
   A)  About 1.6%    B)  About 1/8, or 12.5%    C)  About 35%    D)  About 16%
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Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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discovererdiscoverer
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7 years ago
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doit_the_clown Author
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7 years ago
This helped my grade so much Perfect
cartoon
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Yesterday
Smart ... Thanks!
jmelchor77
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2 hours ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
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