A point source of 100 candela is held 5m above a sheet of blotting pap – McqOptions

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1.	A point source of 100 candela is held 5m above a sheet of blotting paper which reflects 75% of light incident upon it. The illuminance of blotting paper is
A.	4 phot
B.	4 lux
C.	3 phot
D.	3 lux
Answer» C. 3 phot

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