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

Author Question: A slide projector is designed with its lens 6.0 m from the screen. The projected image is 1.5 m ... (Read 98 times)

BrownTown3

  • Hero Member
  • *****
  • Posts: 564
on: Jul 27, 2018
A slide projector is designed with its lens 6.0 m from the screen. The projected image is 1.5 m square of a slide object 2.5 cm square.
 
  (a) What is the object distance from the lens?
  (b) What should be the lens focal length?
  (c) What is the lens POWER?

Question 2

Mary builds a simple magnifying telescope using two lenses of focal length 80. cm and 5.0 cm. The respective diameters are 60. mm and 10. mm.
 
  How many degrees wide does the moon appear through the telescope if it appears only 1/2 degree wide with the naked eye?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

miss_1456@hotmail.com

  • Sr. Member
  • ****
  • Posts: 289
Reply #1 on: Jul 27, 2018
Answer to Question 1

(a) 10. cm
(b) f = 9.8 cm
(c) 10.2 Diopters

Answer to Question 2

8 degrees wide (16 times larger)


BrownTown3

  • Hero Member
  • *****
  • Posts: 564
Reply #2 on: Jul 27, 2018
Thanks


miss_1456@hotmail.com

  • Sr. Member
  • ****
  • Posts: 289
Reply #3 on: Jul 27, 2018
Welcome :)


« previous next »
 

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Mosquito Eyes Up Close: Electron Microscope Image Creates Stunning View Of Insect Mosquito Eyes Up Close: Electron Microscope Image Creates Stunning View Of Insect
Snap-ring pliers are also called lock-ring pliers, and they are designed to remove internal and ... Snap-ring pliers are also called lock-ring pliers, and they are designed to remove internal and ...
screen-shot-2017-02-17-at-9-28-42-am.png screen-shot-2017-02-17-at-9-28-42-am.png
screen-shot-2017-02-01-at-8-26-41-pm.png screen-shot-2017-02-01-at-8-26-41-pm.png
Mastering Biology Question Mastering Biology Question
Eating Disorders and Body Image Eating Disorders and Body Image
Video: Simple Diffusion - gases and nonpolar compounds transport

For a complete list of videos, visit our video library