1) light distribution curve since the given lamp has 23.4 W power and 104 lm/w efficiency factor, answer the following questions. a) how many lumens is the luminous flux of the lamp? b) if the lamp was a smooth sphere, that is, if the light intensity was constant in all directions, would it be a cd? c) if the lamp was a smooth sphere, how many lx would it create from a height of 2 meters directly below it?

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1) light distribution curve since the given lamp has 23.4 W power and 104 lm/w efficiency factor, answer the following questions.
a) how many lumens is the luminous flux of the lamp?
b) if the lamp was a smooth sphere, that is, if the light intensity was constant in all directions, would it be a cd?
c) if the lamp was a smooth sphere, how many lx would it create from a height of 2 meters directly below it?
d) if the lamp was a semi-sphere, how many lx would it create from a height of 2 meters directly below it? (r = 10 cm)
e) note that the values in the light distribution curve of the lamp seen in the figure are given as cd/klm (cd / 1000 lm). According to this, how many lx levels will it create from a height of 2 meters directly below the lamp?
f) how many LX is the light level that the lamp will create in a plane illuminated at a 30° angle from the same height?

75
75°
80
60
60
120
160
200
45
240
280
30
15°
150
30
cd/klm
n = 82 %
Co/C180
C90/C270
Transcribed Image Text:75 75° 80 60 60 120 160 200 45 240 280 30 15° 150 30 cd/klm n = 82 % Co/C180 C90/C270
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