Rear view mirror and field of view

  • Thread starter Punch
  • Start date
  • #1
21
0
A bus driver looks into a plane mirror 20 cm long which is placed 50 cm in front of him. If the rear window is 500 cm from the plane mirror, through what length of the rear window can he see whenever he looks into the mirror while driving?




I have thought about this question but am really stucked. I don't know where to begin the question or how to..
 

Answers and Replies

  • #2
mgb_phys
Science Advisor
Homework Helper
7,774
13


Draw a (scaled) diagram, it's all about what range of angles can hit the mirror - just a question of similair triangles
 
  • #3
21
0


is there no other way such as calculating it?
 
  • #4
mgb_phys
Science Advisor
Homework Helper
7,774
13


You can calculate it once you understand the layout - thats where the diagram helps
 
  • #5
21
0


In short, i have to draw the diagram..
 
  • #6
205
0


Hello Punch,

While it may be possible to for some of us to visualise this problem mentally, you have said that you are finding it very difficult.

Even a rough drawing should help you to understand it better, and a more accurate scaled drawing would also let you make an approximate check on your calculation.
 

Related Threads on Rear view mirror and field of view

Replies
7
Views
5K
Replies
1
Views
3K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
1
Views
2K
Replies
1
Views
4K
  • Last Post
Replies
1
Views
721
  • Last Post
Replies
1
Views
4K
Replies
17
Views
3K
Top