ray diagrams in convex mirrors
Download
Skip this Video
Download Presentation
Ray Diagrams in Convex mirrors

Loading in 2 Seconds...

play fullscreen
1 / 10

Ray Diagrams in Convex mirrors - PowerPoint PPT Presentation


  • 135 Views
  • Uploaded on

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Ray Diagrams in Convex mirrors' - jui


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
convex mirrors
Convex Mirrors

Reflecting surface curves outward

Convex mirrors have their focal point and centre behind the mirror

Make a small, virtual image of the original object

drawing ray diagrams convex mirrors
Drawing Ray Diagrams – convex mirrors

Rule #1 - In the diagrams the rays will be extended behind the mirror as dotted lines to be able to show how they pass through F or C

drawing ray diagrams convex mirrors4
Drawing Ray Diagrams – convex mirrors

Rule #2: draw the ray coming off of the tip of the object parallel to the principle axis

- when it hits the mirror, it bounces off so that a dotted line drawn behind the mirror will pass through the focal point

drawing ray diagrams convex mirrors5
Drawing Ray Diagrams – convex mirrors

Rule #3- This ray comes off of the tip of the object and to the thecentre.

Where it hits the mirror it will bounce back, but I draw a dotted line behind the mirror to show where the ray would have gone.

drawing ray diagrams convex mirrors6
Drawing Ray Diagrams – convex mirrors

The image will appear at the point where the 2 dotted lines connect.

problems
Problems

1: A convex mirror has a radius of 20 cm. An object is placed 30 cm in front of the mirror. Determinewhere the image will appear.

2: For the same situation from Example 1, determine how tall the image is if the object is 5.0 cm tall. Also determine the magnification.

answers
Answers

Since the radius is 20 cm (which is the distance from the mirror to the centre), and since the focal point is half ways in between and negative for a convex mirror, f = -10 cm. Since di is negative, it appears behind the mirror as a virtual image.

Since di is negative, it appears behind the mirror as a virtual image.

homework
Homework

Read pgs.431-438 – do Practice Problems (#1-7) on pg. 436 and answer questions # 1-8 on pg. 438.

ad