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(a) Calculate the number of photoelectrons per second ejected from a 1.40 mm² area of sodium metal by 470 nm EM radiatio
Posted: Fri May 06, 2022 10:58 am
by answerhappygod
- A Calculate The Number Of Photoelectrons Per Second Ejected From A 1 40 Mm Area Of Sodium Metal By 470 Nm Em Radiatio 1 (33.68 KiB) Viewed 29 times
(a) Calculate the number of photoelectrons per second ejected from a 1.40 mm² area of sodium metal by 470 nm EM radiation having an intensity of 1.38 kW/m² (the intensity of sunlight above the Earth's atmosphere). (b) Given that the binding energy is 2.28 eV, what power (in pW) is carried away by the electrons? μW (c) The electrons carry away less power than brought in by the photons. Where does the other power go? How can it be recovered? This answer has not been graded yet.