The following data were collected for a phosphorescent, Ask an Expert

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The following data were collected for a phosphorescent paint being proposed for use in coating highways:

Time (s)	Intensity (lux)
10	1556
20	787
30	399
40	202
50	102
60	52
70	26
80	13
90	7
100	3

The first half life was calculated to be 9.979305311089 seconds

What is the intensity of the light at the 2nd half life?

What is the intensity of the light at the 3rd half life?

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Category:- Physics
Reference No.:- M91670124

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