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Physics
The unit of luminous efficiency of electric bulb is:
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Q. The unit of luminous efficiency of electric bulb is:
JIPMER
JIPMER 2000
A
lumen
B
watt
C
lux
D
lumen/watt
Solution:
From the definition luminous efficiency of the electric bulb is the ratio of illuminating power to the consumed power by the bulb. Hence its unit is lumen/watt.