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  3. the depth of the water body is 2 meters. (a) there

The depth of the water body is 2 meters. (a) There shall be a light source...

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Physics

The depth of the water body is 2 meters.
(a) There shall be a light source at the bottom of the body ofwater, a disc of opaque material floating on the
the center is exactly above the light source. Calculate the minimumradius of the disk so that none
the light beam from the light source would not escape from thewater. Make an explanatory drawing with it applied
the path of the light rays and the angles used in theformulas.
b) Calculate the apparent depth of the body of water for anobserver looking at the water surface at an angle of 30degrees
with respect to the vertical. Make an explanatory drawing showingthe course of the light rays and the formulas
angles used.

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