You have two light-bulbs of different power and color, as indicated in FIGURE 30-26. One is a
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You have two light-bulbs of different power and color, as indicated in FIGURE 30-26. One is a 150-W red bulb, and the other is a 40-W blue bulb.
(a) Which bulb emits more photons per second?
(b) Which bulb emits photons of higher energy?
(c) Calculate the number of photons emitted per second by each bulb. Take (red = 640 nm and (blue = 430 nm. (Most of the electromagnetic radiation given off by incandescent light-bulbs is in the infrared portion of the spectrum. For the purposes of this problem, however, assume that all of the radiated power is at the wavelengths indicated.)
Figure 30-296,
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A 150watt red light bulb emits photons with wavelength of 640 nm and a 40watt blue light bulb emits ...View the full answer
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