A pile 4m high driven into the bottom of a lake is 1m above the ` `water . Determine the length of the shadow of the pile on the bottom of the lake if

Monjur Alahi

A pile 4m high driven into the bottom of a lake is 1m above the `
`water . Determine the length of the shadow of the pile on the bottom of the lake if `
` the sun rays make an angle of `45^@` with the water surface . The refractive index`
` if water is `4/3`. `


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Salim Ahmed Kawsar

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Correct Answer - 2.88m

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