Utilisation factor for indirect lighting scheme

Q.  What will be the utilisation factor for an indirect lighting scheme?
- Published on 05 Oct 15

a. 0.25 – 0.5
b. 0.5 – 0.75
c. 0.1 – 0.25
d. 0.75 – 0.99

ANSWER: 0.1 – 0.25

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