« previous next »

Author Question: An astronomical telescope has an objective lens with focal length fo and has an eyepiece with focal ... (Read 89 times)

melina_rosy

  • Hero Member
  • *****
  • Posts: 531
on: Jul 28, 2018
An astronomical telescope has an objective lens with focal length fo and has an eyepiece with focal length fe. A second telescope has objective and eyepiece lenses with half the focal length of the first telescope. Which telescope gives the greater magnification and by what factor?
 a. The second telescope gives 4 times the magnification of the first.
  b. The first telescope gives 4 times the magnification of the second. c. The actual focal lengths must be known to answer this question.
  d. Both telescopes give the same magnification.

Question 2

The Palomar reflecting telescope has a parabolic mirror with an 80-m focal length. What is the magnification achieved when an eyepiece of focal length 5.0 cm is used?
 a. 1200
  c. 3200
  b. 800
  d. 1600


apple

  • Sr. Member
  • ****
  • Posts: 352
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

melina_rosy

  • Hero Member
  • *****
  • Posts: 531
Reply #2 on: Jul 28, 2018
Thank you!


apple

  • Sr. Member
  • ****
  • Posts: 352
Reply #3 on: Jul 28, 2018
Always glad to help...


« previous next »
 

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Intussusception. A short length of small intestine has telescoped into itself. Intussusception. A short length of small intestine has telescoped into itself.
Cataract extraction. The procedure involves a surgical removal of a cataract lens and its replacemen Cataract extraction. The procedure involves a surgical removal of a cataract lens and its replacemen
LENS PAPER LENS PAPER
Small nuclear RNAs (snRNA), 100-200 bp in length, form part of the splicing mechanisms to process mR Small nuclear RNAs (snRNA), 100-200 bp in length, form part of the splicing mechanisms to process mR
Hubble Space telescope Hubble Space telescope
Galileo Telescope. Galileo Telescope.
Video: Otitis Media

For a complete list of videos, visit our video library