Top Posters
Since Sunday
A
6
j
6
c
5
m
5
C
5
d
5
s
5
n
4
i
4
d
4
d
4
J
4
New Topic  
ppk ppk
wrote...
Valued Member
On Hiatus
Posts: 3561
12 years ago
A nearsighted person cannot see objects beyond 80 cm from his eyes. Which one of the following combinations represents the correct focal length and the refractive power of the contact lenses that will enable him to see the distant objects clearly?
A) +80 cm, +1.3 diopters
B) -80 cm, +1.3 diopters
C) +80 cm, -1.3 diopters
D) -80 cm, -1.3 diopters
E) -1.3 cm, +1.3 diopters
Read 2368 times
1 Reply
Replies
Answer accepted by topic starter
bio_manbio_man
wrote...
Educator
Top Poster
Posts: 33271
12 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  879 People Browsing
Related Images
  
 437
  
 635
  
 1657
Your Opinion
What's your favorite coffee beverage?
Votes: 299

Previous poll results: What's your favorite math subject?