Advertisements
Advertisements
प्रश्न
A light source emits monochromatic light of 555 nwavelengthm. The source consumes 100 W of electric power and emits 35 W of radiant flux. Calculate the overall luminous efficiency.
बेरीज
Advertisements
उत्तर
Given:
Wavelength of light, λ = 555 nm
Radiant flux emitted = 35 W
Power input = 100 W
Overall luminous efficiency = `"Total luminous flux"/"Power input"=(35xx685)/100=239.75 "lm/W"`
So, the overall luminous efficiency will be 240 lm/W.
shaalaa.com
Light Process and Photometry
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
