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At what distance apart should two street lamps be placed so that the illuminance of the street surface at a point lying midway between the two poles is 6.4 lux ? the height of each lamp is 4m and the power of each lamp is 100c.p .

Abhirup Chattopadhyay , 6 Years ago
Grade 9
anser 1 Answers
Harsh
It is very easy.
 
Last Activity: 6 Years ago
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