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Question
Small air bubbles rising up a fish tank appear silvery when viewed from some particular angle is due to the ______.
Options
reflection
refraction
dispersion
total internal reflection
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Solution
Small air bubbles rising up a fish tank appear silvery when viewed from some particular angle is due to the total internal reflection.
Explanation:
If the angle of incidence is larger than the critical angle, a light beam that is travelling from an optically denser to a rarer medium reflects back into the denser medium.
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