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refraction of light in water

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A boy in a children's swimming pool.

Why when we look at the pool the image that we see is smaller than its real one .. i want to calculate this image . Given: n water = 1.33 , n air = 1 , OA = 30 cm ( OA is the real depth of the swimming pool ) i want to calculate OA’ ( the image that I’m seeing when standing beside the pool )

sanaa joumaa asked

 

Answer

Use the relation

refractive index = RD/AD

where is RD is Real Depth and AD is Apparent Depth

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