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2a) Calculate the illuminance at points P1 and P2. Source of light 1400 cd Source of light 1000 cd 3 m P1 P2 -1.8 m- 2 m- NOT TO SCALE

2a) Calculate the illuminance at points P1 and P2. Source of light 1400 cd Source of light 1000 cd 3 m P1 P2 -1.8 m- 2 m- NOT TO SCALE

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2a) Calculate the illuminance at points P1 and P2. Source of light 1400 cd Source of light 1000 cd 3 m P1 P2 1.8 m- 2 m- NOT TO SCALE 2b) Briefly outline the practical limitations of using 'point source' calculations and name the method used to overcome this. (Hint: it is a calculation).
Transcribed Image Text:2a) Calculate the illuminance at points P1 and P2. Source of light 1400 cd Source of light 1000 cd 3 m P1 P2 1.8 m- 2 m- NOT TO SCALE 2b) Briefly outline the practical limitations of using 'point source' calculations and name the method used to overcome this. (Hint: it is a calculation).
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