etermine the maximum and minimum illumination on the surface of a square table measuring 1metre each. a lamp with 400 C.P. in all directions is suspended above the centre of the table at a height of 2 meter.
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Determine the maximum and minimum illumination on the surface of a square table measuring 1metre each. a lamp with 400 C.P. in all directions is suspended above the centre of the table at a height of 2 meter.
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