This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Consider the image formed by a refracting telescope. Suppose an opaque screen is placed in front of ... (Read 46 times)

jake

  • Hero Member
  • *****
  • Posts: 538
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


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

irishcancer18

  • Sr. Member
  • ****
  • Posts: 310
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

C


jake

  • Member
  • Posts: 538
Reply 2 on: Jul 27, 2018
:D TYSM

ASDFGJLO

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Mastering Biology Question Mastering Biology Question
screen-shot-2017-02-01-at-8-48-42-pm.png screen-shot-2017-02-01-at-8-48-42-pm.png
A Radio Telescope in Green Bank, West Virginia A Radio Telescope in Green Bank, West Virginia
Einstein telescope Einstein telescope
Video: The Nerve Impulse

For a complete list of videos, visit our video library