A point source of light is kept below the surface of water (nw = 4/3) at a depth of root 7 m. The radius of the circular bright patch of light noticed on the surface of water is ______ m.

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A point source of light is kept below the surface of water (nw = 4/3) at a depth of root 7 m. The radius of the circular bright patch of light noticed on the surface of water is ______ m.
09
Nov
A point source of light is kept below the surface of water (nw = 4/3) at a depth of root 7 m. The radius of the circular bright patch of light noticed on the surface of water is ______ m. A point source of light is kept below the surface of water (nw = 4/3) [...]
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