Top Posters
Since Sunday
r
5
m
5
h
5
r
5
t
5
B
5
P
5
s
5
m
5
c
5
c
4
4
Home Q & A Board Science-Related Homework Help Physics
New Topic  
Chery Chery
wrote...
Go to Answer
Posts: 3587
Rep: 26 1
7 years ago
The focal length of the lens of a simple film camera is 40.0 mm. By what amount should the distance between the lens and the film be increased or decreased to change the focus from a person who is 25 m from the lens to one who is 4.0 m from the lens?
A) 0.2 mm
B) 0.3 mm
C) 0.4 mm
D) 0.5 mm
E) 0.7 mm
Textbook 
College Physics

College Physics


Edition: 1st
Authors:
Read 148 times
2 Replies
Replies
Answer verified by a subject expert
noreyaganoreyaga
wrote...
#1
Top Poster
Posts: 649
Rep: 123 0
7 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

Chery Author
wrote...
#2
7 years ago
Looked all over the internet for this, thank you for answering correctly
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  744 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 919
  
 177
  
 3463
Your Opinion
Which industry do you think artificial intelligence (AI) will impact the most?
Votes: 379
Previous poll results: Who's your favorite biologist?