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A photosensitive surface emit photoelectron when …

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A photosensitive surface emit photoelectron when red light falls on it will the surface emit photoelectron when blue light will fall on it . give reason

    • Posted by Lucky' Ch. 7 years ago

    CBSE > Class 12 > Physics
    • 1 answers

    Nitika Neb 7 years ago

    photoemission takes place when red light is incident means hc/λred>Work function..1 When blue colour light is incident then energy imparted to the electron is E=hc/λblue as λred>λblue so hcλblue>hcλred...2 from relation 1 and 2 hc/λblue>W so photoelectron will be emitted when blue light is incident .Regards

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