Optics Unit Review

Optics Unit Review

Be familiar with…

·  Properties of light – how light moves, parts of a wave (and how to measure or describe those parts), amount of energy that a wave had

·  Parts of the electromagnetic spectrum (longer/shorter wavelengths, lots vs. little energy) – what they are and what they are used for

·  Law of reflection

·  Parts of a ray diagram

·  Reflection in a plane, concave and convex mirror

·  Locating images in plane (long vs. short-cut methods), concave and convex (know the definitions associated with curved mirrors – e.g. – centre of curvature, radius of curvature, vertex, focal point, focal length, principal axis) mirrors --- and their characteristics (SALT)

·  Know the alternative names for concave and convex mirrors

·  Why do we see reflections (luminous vs. non-luminous, opaque, translucent, transparent, reflected, absorbed, transmitted, diffuse reflection, regular reflection)

·  Uses of concave and convex mirrors – make sure you can list examples and describe how they work and/or are used

·  Magnification of Images – know the two equations (one using the ratio of heights and the other using the ratio of distances) and know how to work through a problem using the “GRASP” method

·  Be able to locate images convex lenses and describe their characteristics (SALT) as well as know the definitions associated with the lenses

·  Be able to recognize the patterns for lenses in terms of location of the object versus characteristics and location of the image

·  Be able to use the THIN LENS EQUATION to be able to determine di, do, f and then to take this further and determine M, hi and ho, recognize the significance of a virtual image when using this equation and be able to describe the image characteristics (SALT) given numbers (think about your assignment)

·  Be able to work your SCIENTIFIC CALCULATOR correctly… including how to program it to do a number such as 5.6 x 1012 or find the inverse/reciprocal

·  Refraction of light (what is it? why does it occur?)

·  Fibre Optics

·  What is the index of refraction and how is it determined (know the equation)? What does a low ‘n’ value vs. a high ‘n’ value mean? Be able to solve problems using the “GRASP” method

·  What is dispersion & total internal reflection – give examples of each

·  Be able to identify/describe the different sources of light (e.g. bioluminescence or chemiluminescence)

·  Be able to describe the different technologies that apply the principles of optics

·  Know the eye, be able to label a diagram of the eye and describe how it works (for e.g. – how is an image formed on the retina)

·  What is the difference between rods and cones

·  What is the difference between far-sightedness, near-sightedness and astigmatism

·  What is colour blindness?