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Can you please help me?!? 10 points! just some questions?

Please help with these, you don't have to answer all of them, just all that you know: 1) The amount of light utilized by a telescope is proportional to the _______ of the _______ of the aperture. 2) The largest aperture telescopes are reflectors because they require a _______ focal length. 3) The problem of a colored halo around an image formed by a simple lens is called _______. 4) True or False: The principle of magnification depends upon the relative area of light admitted into the eyepiece. 5) True or False: Refraction of light is due to the bending of light rays going through different density mediums. 6) What is the f number of a 15 cm diameter, .9 m focal length lens? 7) One parsec is equivalent to about _______ trillion miles. 8) The most advanced astronomical observations indicate that the universe exhibits a(n) _______ which is not _______ by the popular Big Bang theory of origins. Thanks in advance!

Public Comments

1. don't be surprised if you get no other answers than mine [which isn't REALLY an answer] because your post looks like you want people to do your homework for you. you will have to study whatever books your teacher gave to you, or suggested you read, in order to find those answers. I'm sure if your teacher gave you these questions, then the answers CAN be found. good luck to you