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Jeopardy PHY101 Chapter 9 Review Study of Optics Cheryl Dellai Study of Optics Photons Reflection & Refraction Mirrors Lenses Effects Potpourri $100 $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400 $400 Photons $100 What is a photon? ANSWER Photons $200 What is the energy of a photon? ANSWER Photons $300 What can happen to a photon as it moved from one medium to another. ANSWER Photons $400 What is the index of refraction? ANSWER Reflection & Refraction $100 State the Law of Reflection. ANSWER Reflection & Refraction $200 State the Law of Refraction. ANSWER Reflection & Refraction $300 Why are optical fibers important for communication? ANSWER Reflection & Refraction $400 Certain types of sunglasses are very effective at diminishing light reflected from surfaces because of __________. ANSWER Mirrors $100 The direction of light is _____? ANSWER Mirrors $200 Name 3 types of mirrors ANSWER Mirrors $300 What is the mirror equation? ANSWER Mirrors $400 What is the magnification equation? ANSWER Lenses $100 Choose the lens having the shortest focal length. ANSWER Lenses $200 What is a Diopter? ANSWER Lenses $300 What is the thin lens equation? ANSWER Lenses $400 A person looking through eyeglasses sees ________ & _________ images. ANSWER Effects $100 Liquid crystal displays make use of __________. ANSWER Effects $200 Light spreads out when it passes through a narrow slit because of __________. ANSWER Effects $300 When light passes through two or more narrow slits, an alternating dark and bright pattern is observed on a screen because of _________. ANSWER Effects $400 The sky is blue because of ________. ANSWER Potpourri $100 Optical fibers work because of _______. ANSWER Potpourri $200 You see colors in a rainbow because of _________. ANSWER Potpourri $300 A ________ lens is used to compensate for hyperopia (farsighted). ANSWER Potpourri $400 When myopia (nearsighted) is corrected surgically, the shape of the ________ is changed. ANSWER Photons $100 Answer What is a photon? A photon is a wave packet of light. Back to Jeopardy Photons $200 Answer What is the energy of a photon? Energy = hf Planck’s Constant h = 6.63*10-34 J*s Back to Jeopardy Photons $300 Answer What can happen to a photon as it moved from one medium to another. Absorbed Reflected Refracted Back to Jeopardy Photons $400 Answer What is the index of refraction? n = c/v Back to Jeopardy Reflection & Refraction $100 Answer State the Law of Reflection. Angle in = Angle out wrt to the normal normal q Back to Jeopardy q Reflection & Refraction $200 Answer State the Law of Refraction. n1sinq1 = n2sinq2 Back to Jeopardy Reflection & Refraction $300 Answer Why are optical fibers important for communication? They can carry thousands of times the information that wires can. This is the result of internal refraction. Back to Jeopardy Reflection & Refraction $400 Answer Certain types of sunglasses are very effective at diminishing light reflected from surfaces because of polarization. Back to Jeopardy Mirrors $100 Answer The direction of light is positive? Back to Jeopardy Mirrors $200 Answer Name 3 types of mirrors Flat R = infinity Concave R = + Convex R = - Back to Jeopardy Mirrors $300 Answer What is the mirror equation? s-1 + p-1 = 2/R = f-1 Back to Jeopardy s = source p= projection Mirrors $400 Answer What is the magnification equation? s = source p= projection Back to Jeopardy Lenses $100 Answer Choose the lens having the shortest focal length. A The thickest in the middle has the shortest focal length. These are all positive (converging) lenses Back to Jeopardy Lenses $200 Answer What is a Diopter? DO =1/f where f is in meters Back to Jeopardy Lenses $300 Answer What is the thin lens equation? s-1 + p-1 = f-1 =(n2/n1 -1)*(1/R1 – 1/R2) s = source p= projection Back to Jeopardy Lenses $400 Answer A person looking through eyeglasses sees virtual & erect images. Back to Jeopardy Effects $100 Answer Liquid crystal displays make use of polarization. Back to Jeopardy Effects $200 Answer Light spreads out when it passes through a narrow slit because of diffraction . Back to Jeopardy Effects $300 Answer When light passes through two or more narrow slits, an alternating dark and bright pattern is observed on a screen because of interference. Back to Jeopardy Effects $400 Answer The sky is blue because of scattering . Back to Jeopardy Potpourri $100 Answer Optical fibers work because of total internal reflection. Back to Jeopardy Potpourri $200 Answer You see colors in a rainbow because of dispersion. Back to Jeopardy Potpourri $300 Answer A converging lens is used to compensate for hyperopia (farsighted). Back to Jeopardy Potpourri $400 Answer When myopia (nearsighted) is corrected surgically, the shape of the cornea is changed. Back to Jeopardy Thank You for playing Study of Optics Jeopardy!