A surface ejects electrons when hit by green | vedclass

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(B) The energy of a photon is given by $E = h
u = \frac{hc}{\lambda}$.As the wavelength increases,the energy of the photon decreases.The order of wav

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No

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(B) The energy of a photon is given by $E = h
u = \frac{hc}{\lambda}$.As the wavelength increases,the energy of the photon decreases.The order of wavelengths for the given colors is $\lambda_{	ext{green}} Therefore,the energy order is $E_{	ext{green}} > E_{	ext{yellow}} > E_{	ext{red}}$.Since the surface does not eject electrons with yellow light,the energy of yellow light is below the threshold energy (work function) of the surface.Because the energy of red light is even lower than that of yellow light,it will also be below the threshold energy.Thus,no electrons will be ejected by red light,regardless of intensity or duration.

$A$ surface ejects electrons when hit by green light but not when hit by yellow light. Will electrons be ejected if the surface is hit by red light?

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