Luminous efficiency of a fluorescence lamp is All Questions › Category: Others › Luminous efficiency of a fluorescence lamp is 0 Vote Up Vote Down Rajasri Mundrathi Staff asked 3 years ago Options: a) 70 lumens / watt.b) 60 lumens / watt.c) 40 lumens / watt.d) 30 lumens / watt. 1 Answers 0 Vote Up Vote Down Rajasri Mundrathi Staff answered 3 years ago The correct answer is 40 lumens / watt.