(a) If the average frequency emitted by a 120 W light bulb is 5.00 * 10^14 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 * 10^11 visible-light photons per cm2 per second if the light is emitted uniformly in all directions?

(a) If the average frequency emitted by a 120 W light bulb is 5.00 * 10^14 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 * 10^11 visible-light photons per cm2 per second if the light is emitted uniformly in all directions?

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Question

(a) If the average frequency emitted by a 120 W light bulb
is 5.00 * 10^14 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 * 10^11
visible-light photons per cm2 per second if the light is emitted uniformly
in all directions?

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