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Light rays of wavelength 6000A^(@) and o...

Light rays of wavelength `6000A^(@)` and of photon intensity `39.6 watts//m^(2)` is incident on a metal surface. If only one percent of photons incident on the surface of electons emitted per second unit area from the surface will be [Planck constant =`6.64xx10^(-34) J-S`,Velocity of light =`3xx10^(8) ms^(-1)`]

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