« previous next »

Author Question: Lisa Ann is nearsighted with a near point of 75. cm. (a) What FOCAL LENGTH is this? (b) What ... (Read 100 times)

dakota nelson

  • Hero Member
  • *****
  • Posts: 604
on: Jul 27, 2018
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
Reply #1 on: Jul 27, 2018
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

dakota nelson

  • Hero Member
  • *****
  • Posts: 604
Reply #2 on: Jul 27, 2018
Thank you!


jasonq

  • Sr. Member
  • ****
  • Posts: 335
Reply #3 on: Jul 27, 2018
Always glad to help...


« previous next »
 

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

A lilac, orange and white Satin Peruvian guinea pig (show-length coat) A lilac, orange and white Satin Peruvian guinea pig (show-length coat)
The Cardiac Landmarks. A = Aortic Area; P = Pulmonic Area; E = Erb’s Point; T = Tri The Cardiac Landmarks. A = Aortic Area; P = Pulmonic Area; E = Erb’s Point; T = Tri
Spiral Produced by twisting stresses that are spread along the length of a bone (note the break in t Spiral Produced by twisting stresses that are spread along the length of a bone (note the break in t
How to find the equation of a line that is parallel to a line passing through a point How to find the equation of a line that is parallel to a line passing through a point
Point of Intersection of 2 Circles Point of Intersection of 2 Circles
Let A ⊆ R and p ∈ A. Suppose A\{p}6= ∅. Prove that p is an isolated point of A if and ... Let A ⊆ R and p ∈ A. Suppose A\{p}6= ∅. Prove that p is an isolated point of A if and ...
Video: Role of the respiratory system - effect of altered ventilation rates

For a complete list of videos, visit our video library