Author Question: Lisa Ann is nearsighted with a near point of 75. cm. (a) What FOCAL LENGTH is this? (b) What ... (Read 110 times)

dakota nelson

  • Hero Member
  • *****
  • Posts: 604
Lisa Ann is nearsighted with a near point of 75. cm.
 
  (a) What FOCAL LENGTH is this?
  (b) What POWER lens is needed to correct her nearsightedness (assuming distance from lens to eye is negligible)?

Question 2

Light in a transparent material (index of refraction 1.333 ) strikes the boundary with another transparent material (n = 1.010).
 
  (a) What is the critical angle for total internal reflection?
  (b) By what percent does the wavelength change going from the 1st to the 2nd material?



jasonq

  • Sr. Member
  • ****
  • Posts: 335
Answer to Question 1

(a) -75. cm
(b) -1.33 Diopters

Answer to Question 2

(a) 49.26
(b) 32.0



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

jasonq

  • Sr. Member
  • ****
  • Posts: 335

 

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?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

For a complete list of videos, visit our video library