Physics, asked by Iqrakafeel2683, 1 month ago

1000 watt bulb fitted with a reflected illuminates and area of 3 metre into 3 metre with an average illumination of 450 Lux if the bulb has an efficiency of 9 lumen what the efficiency of reflector

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Answered by Rishi456283

0

Answer:

30% is the answer hope it is helpful

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