Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter38: Refraction And Images Formed By Refraction
Section: Chapter Questions
Problem 30PQ
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Question
A lighting fixture has an intensity of 9000 candelas directly below a fixture. What is the illuminance on a table 10 ft below? 20 ft?
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