A glass is filled with water and is held above eye level. It is found that the upper surface of water appear silvery. Why does it happen?
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Firstly , when we see
first light ray refracts
It exceeds the critical angle of water
42 degrees
then total internal reflection of light takes place
So , It appears silvery
first light ray refracts
It exceeds the critical angle of water
42 degrees
then total internal reflection of light takes place
So , It appears silvery
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