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Ultraviolet light of wavelength 300 nm and intensity 1 W m−2 falls on the surface of a photosensitive material. If one percent of the incident photons produce photoelectrons then the number of photoelectrons emitted per second from an area of 1 cm2 of the surface is nearly. [Take hc=1240 eV (nm)] |
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Answer» Ultraviolet light of wavelength 300 nm and intensity 1 W m−2 falls on the surface of a photosensitive material. If one percent of the incident photons produce photoelectrons then the number of photoelectrons emitted per second from an area of 1 cm2 of the surface is nearly. |
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