A small piece of wood is floating on the surface of a 2.5 m deep lake. Where does the shadow form on the bottom when the sun is just setting? Refractive index of water = 4/3.

A small piece of wood is floating on the surface of a 2.5 m deep lake.

1.	A small piece of wood is floating on the surface of a 2.5 m deep lake. Where does the shadow form on the bottom when the sun is just setting? Refractive index of water = 4/3.
Answer» W= 4/3lake DEPTH= 2.4mWhen sun is RISING, θ =90°sin i/ sin R= μ2/μ1sin 90/sinr=4/31/sinr= 4/3sinr = 3/4r= 49°Thus, x/2.5=tanr= 1.15x= 2.5 x 1.15x=2.8m

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A small piece of wood is floating on the surface of a 2.5 m deep lake. Where does the shadow form on the bottom when the sun is just setting? Refractive index of water = 4/3.

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