Physics Review Question Unit: Waves Year: 1990 Question#: 51 Question: Which optical medium would have the smallest critical angle (c) in the situation shown in the diagram? (1 ) Lucite (2 ) water (3 ) Canada balsam (4 ) diamond What is this question really asking? Explanation by: Nathaniel W [ Return to question menu ] Answer 1 Lucite INCORRECT Incorrect, because Lucite has a lower index of absolute refraction than diamond. Try using return to top Answer 2 Water INCORRECT Incorrect, because diamond has a higher index of absolute refraction. try using return to top Answer 3 Canada balsam INCORRECT Incorrect, because diamond has a higher index of absolute refraction than Canada balsam. Try using return to top Answer 4 diamond CORRECT Correct, because in the formula , you need the substance with the highest index of absolute refraction. Out of the choices given, diamond has the highest index of refraction which means light slows down the most in it. return to top What's this question really asking? Which substance has the highest index of absolute refraction? return to top |
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