Question
Which one of the following causes small air bubbles in
water, which is stored in a glass vessel, to appear to shine with a silvery luster? Directions : Each of the following five items consists of a word in capital letters, followed by four words or groups of words. Select the word or group of words that is most similar in meaning to the word in capital letters.Solution
The reason why the air bubble shines in water is because of the total internal reflection. • Total internal reflection is a phenomenon in which light travels back in the same medium or reflects back. It occurs when light travels from an optically denser to a rarer medium. • This happens in an air bubble in water when light travels from water to air and back out. This creates the shine or the silvery lustre. Hence option D is correct.
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