the wavelength must be changed to λ’ where

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Light of wavelength λ strikes a photo – sensitive surface and electrons are ejected with kinetic energy is to be increased to 2E , the wavelength must be changed to λ’ where
13
Sep
Light of wavelength λ strikes a photo – sensitive surface and electrons are ejected with kinetic energy is to be increased to 2E , the wavelength must be changed to λ’ where Light of wavelength λ strikes a photo - sensitive surface and electrons are ejected with kinetic energy is to be increased to 2E [...]
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