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Final

PY 212 Final: PY 212 Remaining Material Summary for Final Exam (also includes material from midterm exams)

4 Pages
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School
North Carolina State University
Department
Physics
Course
PY 212
Professor
Heyward
Semester
Spring

Description
Chapter 25 – Geometric Optics (continued) Thin Lenses Image Characteristics Case 1 (converging lens; object is outside the focal point) • The image is real. • The image is inverted from the object. • The image may be larger or smaller than the object: When d < of, h > i (i.o. the image is larger when the object is close to the lens). When d = of, h = i (i.o. the image and object are the same height when the object is at 2f). When d > of, h < i (i.o. the image is smaller when the object is farther from the lens). • The image is on the opposite side of the lens from the object. Applications: Projection onto a screen (located where image forms); eye glasses Case 2 (converging lens; object is inside the focal point) • The image is virtual. • The image is upright(i.e. same as orientationas the object). • The image is larger than the object. • The image is on the same side of the lens as the object. Applications: Magnifyingglass; eye glasses Case 3 (diverginglens) • The image is virtual. • The image is upright(i.e. same as orientationas the object). • The image is smaller than the object. • The image is on the same side of the lens as the object. Applications: Eye glasses Flat Mirror Image Characteristics • The image is located the same distance behindthe mirror as the original object is in front of the mirror (i.e. d0= d)i • The image and the object are located on the same normal line. • The image is the same size as the object (i.e. M = 1). • The image is virtual. • The image is upright(i.e. it has the same vertical orientationas the original object). • The image is inverted front-to-back, not left-to-right. Spherical Image Characteristics Case 1 (concave mirror; object is outside the focal point) • The image is real. • The image is inverted from the object. • The image may be larger or smaller than the object: When d < of, h > i (i.o. the image is larger when the object is closer to the mirror). When d = 2f, h = h (i.e. the image and object are the same height when the o i o object is at 2f). When d > of, h < i (i.o. the image is smaller when the object is
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