« previous next »

Author Question: Lisa Ann is nearsighted with a near point of 75. cm. (a) What FOCAL LENGTH is this? (b) What ... (Read 50 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?

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.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Torque is a twisting force equal to the distance from the pivot point times the force applied ... Torque is a twisting force equal to the distance from the pivot point times the force applied ...
The left-hand rule states that if a coil is grasped with the left hand, the fingers will point in ... The left-hand rule states that if a coil is grasped with the left hand, the fingers will point in ...
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
What is the freezing point of a solution of 2.86 g MgCl2 in 100 g of water? Kf for water is ... What is the freezing point of a solution of 2.86 g MgCl2 in 100 g of water? Kf for water is ...
The molality of a C12H23O11 solution is 0.6 m. what is the freezing point of the solution C? The molality of a C12H23O11 solution is 0.6 m. what is the freezing point of the solution C?
Mono Lisa Mono Lisa
Video: Basic rhythm - control centers in medulla oblongata, spirograph and normal tidal cycle

For a complete list of videos, visit our video library