× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
p
6
I
6
h
5
k
5
a
5
J
5
k
5
r
5
O
5
x
5
d
4
s
4
New Topic  
mikael mikael
wrote...
Donated
Posts: 12017
9 years ago
In a 35 mm single lens reflex camera (SLR) the distance from the lens to the film is varied in order to focus on objects at varying distances. Over what range must a lens of  40 mm focal length vary if the camera is to be able to focus on objects ranging in distance from infinity down to  1.1 m from the camera? 
A) 1.51 mm 
B) 1.21 mm 
C) 4.53 mm 
D) 6.04 mm 
E) 2.11 mm 
Read 226 times
1 Reply

Related Topics

Replies
wrote...
Staff Member
Educator
9 years ago
AA
Mastering in Nutritional Biology
Tralalalala Slight Smile
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  631 People Browsing
 139 Signed Up Today
Related Images
  
 230
  
 254
  
 888
Your Opinion
Who's your favorite biologist?
Votes: 585