Estimate the number of photons emitted per second by a 15 watt fluorescent lamp. (hint: take an average wavelength)

Question

Question

physics science math

Answer 1

Answer #1

A 15-watt light bulb emits 15 joules of energy each second. Thus, the number of 600-nanometers photons it emits each second is

the number of photons =total energy emitted / energy emitted per photon

=15 joule/3.31x10^19 joule/photon
= 4.531x10^19 photons.

answered by: Spring

Answer 2

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