Calculate the irradiance E in W/cm2 if, radiant intensity I is 10 W/sr and range R is 10cm.

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1.	Calculate the irradiance E in W/cm2 if, radiant intensity I is 10 W/sr and range R is 10cm.
A.	0.1
B.	0.001
C.	0.45
D.	10
Answer» B. 0.001

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