Engineering, 29.03.2021 18:30 oopsorry

Four lamps suspended 8m above the ground at the corners of a square of 4m side. Each lamp give 250cd uniformly below the horizontal plane. Calculate the illuminance (a) on the ground directly under each lamp (b) at the centre of the square

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Four lamps suspended 8m above the ground at the corners of a square of 4m side. Each lamp give 250cd...