A point source of light is submerged 22m below the surface
a point source of light is submerged 2.2m below the surface of a lake and emits rays in all directions. on the surface of the lake, directly above the source, the area illuminated is a circle. what is the maximum radius that this circle could have?
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a point source of light is submerged 22m below the surface of a lake and emits rays in all directions on the surface of
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