× 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  
ppk ppk
wrote...
Valued Member
On Hiatus
Posts: 3561
12 years ago
The focal length of the lens of a simple camera is 40 mm. In what direction must the lens be moved to change the focus of the camera from a person 25 m away to a person 4.0 m away?
A) does not make any difference
B) sideways from the film
C) away from the film
D) towards the film
Read 1317 times
1 Reply

Related Topics

Replies
wrote...
Donated
Valued Member
12 years ago
C
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  552 People Browsing
 145 Signed Up Today
Related Images
  
 144
  
 465
  
 596
Your Opinion
Which 'study break' activity do you find most distracting?
Votes: 741