Revision: Refraction Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 03 Refraction - Revision Quiz Test your understanding of Refraction here: 1 / 5 1) What is the refractive index of a medium? the ratio of the speed of light in air to the speed of light in the medium. the ratio of the speed of light in vacuum to the speed of light in the medium. the ratio of the speed of light in the medium to the speed of light in air. the ratio of the speed of light in the medium to the speed of light in vacuum. 2 / 5 2) Total Internal Reflection (TIR) occurs when Light is passing from denser to less dense medium and the incident angle is smaller than the critical angle. Light is passing from denser to less dense medium and the incident angle is larger than the critical angle. Light is passing from less dense to denser medium and the incident angle is larger than the critical angle. Light is passing from less dense to denser medium and the incident angle is smaller than the critical angle. 3 / 5 3) Which of the following does not involve the phenomena of total internal reflection of light rays? A mirage seen on a stretch of road in hot weather. A prismatic periscope that is used in a submarine. A bundle of optical fibres that is used in endoscopes and telecommunications. A pair of spectacles that corrects myopia. 4 / 5 4) A student uses a ray box and a semicircular glass block, as shown below, to investigate refraction. She obtains the following results: Which set of results is likely to be incorrect? B D C A 5 / 5 5) A ray moves from substance X into substance Y. What is the angle of refraction shown? 20º 70º 40º 30º Your score is Restart quiz
