Observer A is 3.0 m from a tiny light bulb while Observer B is 12.0 m away from that same bulb. Assume that the bulb radiates uniformly in all directions and that there are no reflections or absorption. If Observer B records an intensity 'l', what intensity is recorded by Observer A? Asphere = 4*PI*r2 %3D O 36*I OI O 91 O 16"| O 144*I
Observer A is 3.0 m from a tiny light bulb while Observer B is 12.0 m away from that same bulb. Assume that the bulb radiates uniformly in all directions and that there are no reflections or absorption. If Observer B records an intensity 'l', what intensity is recorded by Observer A? Asphere = 4*PI*r2 %3D O 36*I OI O 91 O 16"| O 144*I
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Transcribed Image Text:Observer A is 3.0 m from a tiny light bulb while Observer B is 12.0 m away
from that same bulb. Assume that the bulb radiates uniformly in all
directions and that there are no reflections or absorption. If Observer B
records an intensity 'I', what intensity is recorded by Observer A?
Asphere = 4*PI*r2
%3D
O 36*I
O 91
O 16"|
O 144*I
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