Author Question: Lisa Ann is nearsighted with a near point of 75. cm. (a) What FOCAL LENGTH is this? (b) What ... (Read 111 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?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

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?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

For a complete list of videos, visit our video library