A coin placed at the bottom of a vessel, appears to be raised when the vessel is filled with water. This is due to the phenomenon of __________.

reflection

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dispersion

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refraction

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scattering

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Solution

The correct option is C refraction
When light enters a denser medium from a rarer medium, it bends away from the normal. On the other hand, it bends away from the normal, when light enters a rarer medium from a denser medium. Because of this, the light coming from the coin is interpreted by our brain as if the coin is at a depth lesser than it actually is. This apparent depth phenomenon is due to the refraction of light.

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Similar questions

Explain the following :

(a) A coin placed at the bottom of a vessel appears to be raised when water is poured in the vessel.

(b) A straight stick partly dipped in water obliquely, appears to be bent at the surface of water.

= 4 / 3

12 c m

A coin is placed at the bottom of a bowl and water is poured into it. The coin appears to be ________ due to _______.

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