Author Question: Lisa Ann is nearsighted with a near point of 75. cm. (a) What FOCAL LENGTH is this? (b) What ... (Read 109 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?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

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?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

For a complete list of videos, visit our video library