use the idea of refraction to explain why the coin can be seen when there is water in the can.
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Answer: Explanation: refraction is the bending of light when light rays travel from one medium to another. ... so, when we put the coin in the water, the light travels from air medium (less denser) to water medium (more denser) and therefore we see the coin more nearer to surface then it actually is
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Answer:When water is poured then it is due to refraction of light the coin becomes visible. When the light rays travel from the water medium (denser) to the air medium (rarer) it bends away from the normal due to the refraction. Therefore, an image of the coin is formed at a smaller depth causing it to be visible (as shown in the figure).
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