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 critical angle for glass (refractive index 1.50) at a glass-air boundary? 42º 45º 30º 90º 2 / 5 2) 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 C D A 3 / 5 3) Which of the following is not an effect of refraction? A rainbow is observed when a ray of light passes through a glass prism. A straight pencil appears to be bent when partially submerged in water. A ray of light changes direction as it travels through an optical fibre. A fish appears bigger than its actual size to an observer above water. light changing direction in an optical fibre is due to TIR. 4 / 5 4) The diagram shows a right-angled prism being used to turn a ray through 90º. What is the critical angle for the light in the glass? less than 45º equal to 90º equal to 45º more than 45º 5 / 5 5) Total Internal Reflection (TIR) occurs when Light is passing from less dense to denser medium and the incident angle is smaller 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 denser to less dense medium and the incident angle is larger than the critical angle. Light is passing from denser to less dense medium and the incident angle is smaller than the critical angle. Your score is Restart quiz
