A) 100 lux
B) 200 lux
C) 300 lux
D) 400 lux
Correct Answer: B
Solution :
\[\varphi =4\pi L=200\ \pi \]lumen. so \[I=\frac{\varphi }{100\,A}=\frac{200\,\pi }{100\times \pi {{r}^{2}}}=\frac{2}{{{(0.1)}^{2}}}\]= 200 lux.You need to login to perform this action.
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