Q- A 150 W light bulb emits about 8 W of visible light. (The other 142 W are emitted as infrared radiation or lost as heat to the surroundings.) The average wavelength of the visible light is about 510 nm, so make the simplifying assumption that all the visible light has this wavelength.
(a) What is the (average) frequency of the emitted light?
(b) How often are visible-light photons emitted by the bulb?
(c) Parts (a) and (b) are both a 'number of something' per second. Should your answers to parts (a) and (b) be the same?
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