PHYS2080 mid-term 2 study guide

The exam will be on Friday, March 25, 2005, 9:00 - 9:50 a.m. in DC 1019. It will cover Chapters 20-24 (except 21) from the course book and will consist of 15 multiple choice questions (3 questions from each Chapter). The format will be the same as that of previous exams. You will have the entire class period to complete the exam. Bring a #2 pencil with you to the exam! A calculator can be used.

Inductance. Magnetic flux. Faraday's law of magnetic induction. Motional emf. Lenz's law (polarity of induced emf). Self-induced emf. Inductors.

Light and Optics. Wavelength and frequency of a wave. Reflection and refraction. Wave front. Huygens' principle. Index of refraction. Total internal reflection. Image formation in flat and spherical (concave and convex) mirrors. Real and virtual images. Focal points. Image formation in thin lenses. Converging and diverging lenses. Sign rules for mirrors and lenses. Combination of lenses (how images are formed in a combination of lenses). Aberrations. Interference (conditions, experiments showing interference). Young's double-slit experiment. Interference fringes. Interference in thin films. Newton rings. Diffraction. Diffraction grating.

Magnetic flux. Relation of the induced emf and magnetic flux. Time constant in circuits with inductors. Energy stored in a magnetic field. Relation between the energy of a photon and its wavelength (frequency). The law of reflection. Snell's law of refraction. Condition for total internal reflection. Lateral magnification. Mirror equation. Thin-lens equation. Lens maker's equation. Conditions for constructive and destructive interference for slits, thin films, and diffraction grating. Condition for the Fraunhofer diffraction.

Conversion of units into the SI system. Abbreviations of non-traditional units (tera, giga, mega, kilo, milli, centi, micro, nano, pico). Example: 1nm (nanometer)=10^-9 m.

Under what conditions a magnetic emf is induced in a wire (e.g., direction of the electric and magnetic filed)? Which parameters do affect the magnitude of a magnetic flux? What is self-inductance and how does it depend on magnitude or changes in current? What is index of refraction? How does refraction affects the direction of refracted light? Which photons have more energy (long-wavelength or short-wavelength)? What is the relation between wavelength and frequency of photons? What is the condition for total internal reflection? Can a medium have index of refraction less than unity? Where are real and virtual images are formed in lenses and mirrors? Where does light go from a focal point of a lens or a mirror? What is the relation between the radius of curvature and focal length? How to sum up waves? What is the object distance for the second lens in a combination of two lenses? What happens to a wave's phase when it emerges from a medium with a higher (lower) index of refraction? What is order number in interference? What is the diffraction grating? How does a fringe's width depends on the number of lines (slits) in a grating?