2. A small light source (point source) is located in water (n-1.33) at a depth d below the surface. Determine (a.) the critical angle for total reflection of light at the water-air interface (b.) the depth of the light source if an observer above the water sees an illuminated circle of 3m radius.

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2. A small light source (point source) is located in water (nr 1.33) at a depth d below the
surface. Determine (a.) the critical angle for total reflection of light at the water-air
interface (b.) the depth of the light source if an observer above the water sees an
illuminated circle of 3m radius.
Transcribed Image Text:2. A small light source (point source) is located in water (nr 1.33) at a depth d below the surface. Determine (a.) the critical angle for total reflection of light at the water-air interface (b.) the depth of the light source if an observer above the water sees an illuminated circle of 3m radius.
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