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1. An ultraviolet light with wavelength 380 nm and intensity 1.00 W/m2 falling on 1.00 cm2...

1. An ultraviolet light with wavelength 380 nm and intensity 1.00 W/m2 falling on 1.00 cm2 area of Lithium surface. If 0.9 % of the incident photons produces photoelectrons, how many photons emitted per second.

2.Calculate maximum kinetic energy of ejected photoelectron when 320 nm light falls on Silver surface.

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