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What is the cause of the blue color of the ocean?

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in Physics – Class 12 by (135k points)
What is the cause of the blue color of the ocean?

(a) Reflection

(b) Scattering of light by water molecules

(c) Total internal reflection

(d) Refraction

I got this question in an online interview.

Asked question is from Ray Optics topic in chapter Ray Optics and Optical Instruments of Physics – Class 12

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Right answer is (b) Scattering of light by water molecules

Explanation: The blue color of the ocean is due to the preferential scattering of light by water molecules. This is the underlying reason for many other phenomena such as why the sky is blue or the sky is reddish at the time of sunrise or sunset.

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