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Ultraviolet light of wavelength 300 nm and intensity 1.0 watt/m2 falls normally on the surface of a photosensitive material. If 1% of the incident photons produce photoelectrons, then the number of photoelectrons emitted from an area of 1.0 cm? of the surface is nearly 1) 9.6x10* per sec 2) 4.12x10 per sec 3) 1.51x10" per sec 4) 2.13x10" per sec