Question : Which one of the following processes is responsible for the glittering of air bubbles rising through water?
Option 1: Reflection of light
Option 2: Refraction of light
Option 3: Total internal reflection of light
Option 4: Scattering of light
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Correct Answer: Total internal reflection of light
Solution : The correct answer is Total internal reflection of light
Due to the total internal reflection , light gets trapped inside the air bubble, making it shine. It occurs when the ray travels from a denser medium to a rarer medium and the angle of incidence is greater than the critical angle. Complete internal reflection can be observed in optical fibres, diamonds and other glittering objects.
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