{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

PROBLEM 25 & 26 April 29 2010

PROBLEM 25 & 26 April 29 2010 - Problem 26(like...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Solving problems 25 & 26 April 29, 2010 Problem 25 (like 26.06): A periscope for looking behind you consists of a pair of mirrors, one above the other, with their surfaces at 45 o from the vertical and whose surfaces are perpendicular to each other. You see a man approaching from behind. The image is. a) right side up and forwards ; b) upside down and backwards; c) right side up and backwards; d) upside down and forwards; e) invisible. What do you know? I have to draw a picture of the mirrors with extended surfaces so I can easily see where the virtual images are – on the opposite sides of the mirror from the objects. Then you easily see that the 2 nd virtual image is inverted. However the man’s right hand is still on the right so he looks upside down and backwards.
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Problem 26 (like 26.14): A thin vacuum container is made from a sheet of shiny aluminum foil. The air pressure forms the foil into beautiful concave mirror, but you are worried that it may pop suddenly and ruin the delicate experiment inside the container. The distance from the mirror where your finger and its image in the mirror are up and down pointing at each other and have the same size is 0.5 m. What is the radius of curvature of the mirror? a) 1 m; b) 2 m; c) 0.707 m; d) 0.5 m; e) 0.25 m. Answer – The tip of your finger is at the center of curvature because the light rays are returning to the same point. Thus the radius of curvature is 0.5 m....
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern