College Physics
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ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Transcribed Image Text:Q-1 A student wants to compare the luminous flux of a
lightbulb with that of a 2 =1750 (lm) lamp. The lightbulb
and the lamp illuminate (E) a sheet of paper equally(E₁ = E₂).
The 1750 (lm) lamp is d₂ =1.25 m away from the sheet of
paper, the lightbulb is d₁ =1.08 m away from paper.
What is the lightbulb's luminous flux(₁)?
lighbulb
Lamp
Source
.di.
Source
dz
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