Question: (a) If the average frequency emitted by a 200-W light bulb is 5.00 x 1014 Hz, and 10.0% of the input power is emitted as

(a) If the average frequency emitted by a 200-W light bulb is 5.00 x 1014 Hz, and 10.0% of the input power is emitted as visible light, approximately how many visible-light photons are emitted per second?
(b) At what distance would this correspond to 1.00 x 1011 visible-light photons per square centimeter per second if the light is emitted uniformly in all directions?

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