# Lect16 - Lecture 16 Mirrors Lenses Wednesday Mirror Summary...

This preview shows pages 1–3. Sign up to view the full content.

1 Lecture 16: Mirrors & Lenses Remainder of Chapter 24 Reflection at Spherical Surfaces Refraction through Lenses October 11 Physics 104, Fall 2011 1 Wednesday Mirror Summary Angle of incidence = Angle of Reflection Principal Rays – Parallel to P.A.: Through focus – Through focus: Parallel to P.A. – Through center: Back on self |f | = R/2 Positive for Concave mirror Negative for Convex mirror October 11 Physics 104, Fall 2011 2 October 11 Physics 104, Fall 2011 3 Compared to the original arrow the image is? 1. Larger 2. Smaller 3. The same size R f p.a. Reading Quiz c October 11 Physics 104, Fall 2011 4 O I d i Mirror Equation Mirror Equation: 1 d o + 1 d i = 1 f f d o d o = distance object is from mirror ( + in front - behind ) d i = distance image is from mirror ( + in front - behind ) An arrow is placed 6 cm in front of a concave mirror with focal length f=2 cm. Determine the image location. f = focal length of mirror (R/2) (+ in front - behind ) 1 6 cm + 1 d i = 1 2 cm d i = 3 cm in front of mirror SIGNS d 0 : positive is side light comes from (before hitting mirror) d i : positive is side light goes to (after hitting mirror) positive is REAL image negative Virtual f: positive is side light goes to (after hitting mirror) positive is converging negative diverging October 11 Physics 104, Fall 2011 5 +d o +d i +f Mirror Concave Mirror : Reading Quiz 6 The image produced by a concave mirror of a real object is: October 11 Physics 104, Fall 2011 6 1) Always Real 2) Always Virtual 3) Sometimes Real, Sometimes Virtual Mirror Equation: 1 d o + 1 d i = 1 f 1 d i = 1 f 1 d 0 Concave mirror : f > 0 Real Object means in front of mirror: d o > 0 d i can be negative or positive!

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
2 Convex Mirror Question Where should you place an object in front of a convex mirror to produce a real image? October 11 Physics 104, Fall 2011 7 1) Object close to mirror 2) Object far from mirror 3) Either close or far 4) You can’t Mirror Equation: 1 d o + 1 d i = 1 f 1 d i = 1 f 1 d 0 d i is negative!
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• 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.

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

• 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.

Dana University of Pennsylvania ‘17, Course Hero Intern

• 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.

Jill Tulane University ‘16, Course Hero Intern