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Author Question: Consider the image formed by a refracting telescope. Suppose an opaque screen is placed in front of ... (Read 42 times)

jake

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on: Jul 27, 2018
Consider the image formed by a refracting telescope. Suppose an opaque screen is placed in front of the lower half of the objective lens. What effect will this have?
 
  A) The top half of the image will be blacked out.
  B) The lower half of the image will be blacked out.
  C) The entire image will be blacked out, since the entire lens is needed to form an image.
  D) The image will appear as it would if the objective were not blocked, but it will be dimmer.
  E) There will be no noticeable difference in the appearance of the image with the objective partially blocked or not.

Question 2

Electromagnetic radiation of wavelength 3.5 meters is which type?
 
  A) AM-radio
  B) microwaves
  C) FM-radio
  D) visible
  E) ultraviolet


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irishcancer18

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Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

C


jake

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Reply 2 on: Jul 27, 2018
Excellent

ultraflyy23

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Reply 3 on: Yesterday
Wow, this really help

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