Solving a problem in physics section 42 point 6 optic

Solving a problem in physics section 42 point 6 optic

6. The hole in the lamp housing closed flat glass milk size of 10x15 cm. Intensity I lamp in a direction making an angle φ = 60 ° to the normal, equal to 15 cd. Determine the brightness L glass.

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)

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