Light with a wavelength range of 145-295 nm shines on a, Physics

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Light with a wavelength range of 145-295 nm shines on a

light with a wavelength range of 145-295 nm shines on a silicon surface in a photoelectric effect apparatus, and a revering potential of 3.5 V is applied to the resulting photoelectrons.

(a) What is the longest wavelength of the light that will eject electrons from the silicon surface?

(b) with what maximum kinetic energy will electrons reach the anode?

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Physics: Light with a wavelength range of 145-295 nm shines on a

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