Question

why does its shape and size change when a coin put in a glass of water. ​

Answer 1

Answer:

when coin put in glass water it's shape is changed due to refractive index of glass

Answer 2

Explanation:

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Since air has an index of refraction of essentially 1 and water has an index of refraction of 1.33 the angle from which the rays of light reach your eyes is larger than the angle they would in air. This makes the angular size larger to your eyes which makes the object look larger relative to how they would look in air.

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