Advanced Geometry by H.C. Rajpoot-2014
A square plane, having each side 16 cm, is divided into 16 equal squares. Now a uniform point-source 'S' of 1 kW is located at a normal height 6 cm from vertex. Find out the total radiation (in Watt) incident on the shaded portion.
(point source 'S' is located normal to the plane of paper, as shown in the fig above)
Note: Use scientific calculator
The answer is 3.92.
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