Question 1139322
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The intensity of illumination I from a light varies inversely as
the square of the distance d from the light.
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{{{I=k/d^2}}}



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(b) Determine the constant of proportionality if it is known
that a lamp has an intensity of 1000 candles at a distance
of 8 m.
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{{{k=I*d^2}}}

{{{k=1000*8^2}}}

{{{k=64000}}}


The rest should be clear enough.