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A photosensitive metallic surface has a ...

A photosensitive metallic surface has a work function `phi` . If a photon of energy `3phi` fall on this surface, the electron is ejected with a maximum velocity of `6xx10^(6)` m/s. When the photon energy is increased to `9phi` , then the maximum velocity of the ejected photoelectrons will be

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A photosensitive metallic surface has work function , h v_(0) . If photons of energy 2hv_(0) fall on this surface , the electrons come out with a maximum velocity of 4 xx 10^(6) m//s . When the photon energy is increased to 5hv_(0) ,then the maximum velocity of photoelectrons will be

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