3. A newly bought Infrared lamp was installed in the RND laboratory by Engr. De Guzman. He intends to use it for his photoluminescence research with platinum which is why he first tested it out first to know its full capability. (a.) If Engr. De Guzman intends to use the lamp at 260 W, how much photons are produced by the lamp per second if the supplier specified that the lamp has a 74.9% efficiency in converting the electrical energy to infrared radiation with a wavelength of 2887 nm? (b.) If a 42.5 g thin plate of platinum is exposed to the light of the infrared lamp for 20 seconds, how fast are the photoelectrons produced? The work function of platinum is 6.35 eV.
3. A newly bought Infrared lamp was installed in the RND laboratory by Engr. De Guzman. He intends to use it for his photoluminescence research with platinum which is why he first tested it out first to know its full capability. (a.) If Engr. De Guzman intends to use the lamp at 260 W, how much photons are produced by the lamp per second if the supplier specified that the lamp has a 74.9% efficiency in converting the electrical energy to infrared radiation with a wavelength of 2887 nm? (b.) If a 42.5 g thin plate of platinum is exposed to the light of the infrared lamp for 20 seconds, how fast are the photoelectrons produced? The work function of platinum is 6.35 eV.
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Transcribed Image Text:3. A newly bought Infrared lamp was installed in the RND laboratory by Engr. De Guzman. He intends to use it for his
photoluminescence research with platinum which is why he first tested it out first to know its full capability.
(a.) If Engr. De Guzman intends to use the lamp at 260 W, how much photons are produced by the lamp per second if the
supplier specified that the lamp has a 74.9% efficiency in converting the electrical energy to infrared radiation with a
wavelength of 2887 nm?
(b.) If a 42.5 g thin plate of platinum is exposed to the light of the infrared lamp for 20 seconds, how fast are the
photoelectrons produced? The work function of platinum is 6.35 eV.
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