Four different compact fluorescent bulbs and their comparison to incandescent bulbs are advertised as follows: a 42-W cfl produces the light of a 150-W incandescent, a 9-W cfl produces the light of a 40-W incandescent, a 23-W cfl produces the light of a 100-W incandescent,and a 13-W cfl produces the light of a 60-W incandescent. Which cfl produces the most light per watt, and which one produces

the least? Assume true advertising!
a. the 13 W, the 42 W
c. the 23 W, the 42 W
b. the 9 W, the 23 W
d. the 42 W, the 13 W


A

Physics & Space Science

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