This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The near point of a farsighted person's uncorrected eyes is 80 cm. What power contact lens should be ... (Read 87 times)

tichca

  • Hero Member
  • *****
  • Posts: 554
on: Jul 29, 2018
The near point of a farsighted person's uncorrected eyes is 80 cm. What power contact lens should be used to move the near point to 25 cm from this person's eyes?
 
  A) 2.8 diopters
  B) -2.8 diopters
  C) -4.0 diopters
  D) -4.2 diopters
  E) 4.2 diopters

Question 2

A man is nearsighted and cannot see things clearly beyond 110from his eyes. What is the focal length of the contact lenses that will enable him to see very distant objects clearly?
 
  A) 50 cm
  B) -50 cm
  C) -110 cm
  D) 110 cm
  E) -30 cm

Question 3

A nearsighted physicist cannot see things clearly beyond 90 cm from her eyes. What is the power of the contact lenses that will enable her to see very distant objects clearly?
 
  A) 1.1 diopters
  B) -1.1 diopters
  C) -1.7 diopters
  D) -2.2 diopters
  E) 2.2 diopters


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

yahahah24021

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

You just saved me a lot of time. ;)

Answer to Question 3

B


tichca

  • Member
  • Posts: 554
Reply 2 on: Jul 29, 2018
:D TYSM

alexanderhamilton

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

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.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

A comparison of the sizes of various chemical and biological structures, and the resolving power of A comparison of the sizes of various chemical and biological structures, and the resolving power of
Terminals 85 and 86 represent the coil inside the relay. Terminal 30 is the power terminal, 87a is ... Terminals 85 and 86 represent the coil inside the relay. Terminal 30 is the power terminal, 87a is ...
Stand behind the recipient. Lay your hands on the shoulders to establish contact. Squeeze the ... Stand behind the recipient. Lay your hands on the shoulders to establish contact. Squeeze the ...
The Risk of Nuclear Power The Risk of Nuclear Power
Coffee will not sober you up. An intoxicated person who drinks coffee will end up being a stimulated Coffee will not sober you up. An intoxicated person who drinks coffee will end up being a stimulated
The power of English Language "&" and "and" The power of English Language "&" and "and"
Video: Osmosis - water transport

For a complete list of videos, visit our video library